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　　Original title: AI juvenile hard technology

　　In March, 2023, a ranking released by Zeta Alpha, an American industry research institution, made many domestic artificial intelligence (AI) practitioners feel very excited. Among the top 100 cited AI papers in the world, China’s Defiance Technology, a unicorn enterprise founded by three Tsinghua "Yao Ban" students, ranked second only to the "popular star" of international artificial intelligence.

　　As early as before the artificial intelligence surge, they embarked on the journey of sending artificial intelligence technology from the laboratory to real life, and finally let China’s artificial intelligence industry stand on the world-class track.

　　Xueba juvenile "assembly number"

　　Where can I see the most Olympic gold medal winners in China? The answer may be-Defiance Science and Technology Research Institute of Jinyu Zhizao Workshop in Haidian District. Among the 500 researchers, there are more than 30 former gold medal winners of the International Informatics Olympiad, the acm international collegiate programming contest and the National Youth Informatics Olympiad.

　　The leader of the research institute is Yinqi. Inki, an 18-year-old boy, was admitted to Tsinghua University in 2006. After entering the school, he was selected to enter "Yao Ban".

　　"Half the talents in Tsinghua, half the talents in Tsinghua are in Yao Ban" —— Yao Ban, which won such praise from the outside world, is the computer science experimental class of Tsinghua School, founded by Academician Yao Qizhi, an American Turing Award winner and a world-famous computer scientist.

　　"World-class computer professionals must explore the most cutting-edge issues of global science and technology." In the class of "Yao Ban", Yinqi buried his life ambition to pursue cutting-edge technology diligently, and also met like-minded classmates Tang Wenbin and Yang Mu.

　　At that time, technological change was driving "the potential of starting a prairie fire" with "a spark" on the other side of the ocean. Facebook created by Zuckerberg has changed the traditional social model in the world, and Apple led by Jobs has launched the epoch-making electronic product iPhone.

　　Change is opportunity. In 2011, three Tsinghua "Xueba" jointly founded Defiance Technology, becoming the earliest artificial intelligence startup company in China. However, AI’s extremely attractive technical vision cannot directly bring the future to the front. Young geeks who are full of blood just broke into the society and were splashed with cold water. "Where is a technology startup company in China?" An investor left a word to Inch and Tang Wenbin, and the tone was beyond doubt.

　　The stereotype of investors was faced by China science and technology entrepreneurs more than ten years ago. At that time, most of the capital’s eager eyes on entrepreneurial projects focused on mobile Internet applications and business model innovation that could become popular overnight. There are few precedents for the success of technology entrepreneurship, and as for artificial intelligence, few people care.

　　Despite this, several young people firmly believe in their own judgment-mastering the underlying technology, they will embrace the "BRIC" that will shine sooner or later.

　　Yinqi and the team worked around the clock to train the visual recognition cloud platform with a billion-level algorithm every day through the "neuron-like deep learning algorithm" to accelerate the self-repair of the platform. Just like sea tactics, the more data systematically analyzed, the more accurate the calculation and identification results will be.

　　Only one year later, the false recognition rate of the contemptuous visual service platform Face++ has dropped to one in ten thousand, which is equivalent to growing into an 18-year-old adult’s brain in three years in the direction of visual recognition. By the second half of 2014, its recognition rate has reached 97.27%, and it has won the champion of three international evaluations, namely FDDB, 300-W and LFW, exceeding the recognition rate of Facebook of 97.25%. This is the catch-up of latecomers.

　　Patiently cross the "Death Valley"

　　In March 2016, Google’s artificial intelligence Go software AlphaGo beat the former world Go champion Li Shishi, and artificial intelligence became a household name overnight. Startups based on artificial intelligence technology have suddenly become hot. In 2017, Defiance Technology received $460 million in Series C financing.

　　However, the growing pains also follow-more players, more expensive research and development, but less technology.

　　Yinqi realized that after the early honeymoon period, the industry was entering the deep water area. The application of artificial intelligence technology will be the first to mature in the enterprise market, and the key battle for artificial intelligence start-ups to cross the "Valley of Death" will also start on this "battlefield". Attack the enterprise market!

　　However, compared with the consumer market with high outbreak and high growth, the enterprise market is a "bitter" business. No matter in the fields of finance, security or supply chain, every industry is occupied by giants who have been deeply cultivated for many years. For a group of young geeks, it is not easy to gnaw such "hard bones".

　　Shortly after entering the security industry, Tang Wenbin, as the company’s chief technology officer, found that many face recognition systems obtain information from the video shot by the front-end ordinary camera and then identify it, so it is difficult to store and transmit the video. "Why not directly make a smart cameras that can be identified immediately? It must be very valuable. "

　　Just do it. A high-end smart cameras comes out, which is not only equipped with a self-developed intelligent identification system, but also uses a sensor with leading performance, an expensive processor and even a seven-color shell.

　　However, when communicating with users, the team found that these products, which are cool enough in terms of technical indicators and appearance, did not meet the demand. Customers in an industry require power consumption within 3 watts, while their smart cameras consume nearly 18 watts. The cost of a piece of equipment of 10,000 yuan was even more unacceptable in the market environment at that time.

　　"Looking for nails with a hammer." This experience is a detour that many companies that started with technology have gone through. On the long March of technological entrepreneurship, there is never a shortcut, and the only way is to keep going.

　　Go to the nearest line of demand-

　　Standing in an e-commerce platform warehouse with a temperature of minus 10℃ and an area of 20,000 square meters, Tang Wenbin and Yinqi found that any air conditioner and heating can’t play any role here. In this environment, the total walking distance of the picking team can reach 30 to 40 kilometers at the end of the day. Is there any way to improve the efficiency of warehousing and logistics? Since then, in this large warehouse, more than 500 robots of three types of partners have been ignored and worked together, which has improved the efficiency of personnel by 40%.

　　Go to the "battlefield" where the demand for technology is the most urgent-

　　At the beginning of 2020, the epidemic broke out in COVID-19, and the emergency project team headed by Yinqi was set up on the first day of New Year’s Day. More than 100 people joined the research and development of artificial intelligence temperature measurement scheme. Ten days later, Ming Ji AI intelligent temperature measuring system was officially delivered for trial operation, and it was applied to Beijing’s major subways, supermarkets, hospitals and other scenes.

　　Nowadays, in more than 100 domestic cities, more than 10 countries and regions, ignoring urban Internet of Things solutions is always exerting wisdom for urban operation; In the smart warehouses of major enterprises, the smart pallet four-way car with small body and standard load of 1500 kg has been put into battle; Hundreds of millions of smart phones around the world have used the contemptuous device unlocking and computational photography solutions …

　　The technical vision of "using artificial intelligence to benefit the public" of young geeks 12 years ago has blossomed in fields, factories, mines, schools and communities.

　　Embrace the wave of hard technology entrepreneurship

　　An armored robot gradually learned human actions, language, creativity and even emotions in the process of long-term contact with human beings, and was finally recognized by human beings and integrated into human society. The science fiction film Machine Butler released in 1999 showed people the future life of robots and human beings. The intelligent and warm robots in the film are now accelerating into reality.

　　Yinqi said with emotion: "Technological changes will definitely roll forward, whether you join or not. If it can’t lead in core technology, China’s AI enterprises will gradually lose their position in global competition. "

　　On the road of technological exploration, he is not alone with contempt.

　　In 2014, Dai Wenyuan, who won the world championship in the ACM acm international collegiate programming contest, known as the "Computer Olympics Competition", and his mentor Professor Yang Qiang established the fourth paradigm. In 2016, Lou Tiancheng, who graduated from "Yao Ban" like Yinqi and was called "the leader of the building" by Tsinghua students because of his superior programming ability, and Peng Jun set up an autonomous driving company Xiaoma Zhixing. In the same year, Chen Tianshi and Chen Yunji, two brothers who graduated from the junior class of the University of Science and Technology of China, founded the CAMBRIAN artificial intelligence chip company.

　　Yinqi, Chen Tianshi, Lou Tiancheng, Dai Wenyuan … In Beijing, the new generation of entrepreneurs and entrepreneurs have emerged, and the wave of hard technology represented by artificial intelligence has also swept across the country with Beijing as the center. At present, Beijing, which has gathered nearly 30% of artificial intelligence enterprises in the country, has become a veritable "AI first city".

　　The innovation spiral of hard technology touches more than artificial intelligence. Relevant persons in charge of the Municipal Science and Technology Commission and Zhongguancun Management Committee observed that in the fields of high-tech and cutting-edge technologies such as new materials, virtual reality, artificial intelligence and precision medical care, a large number of technology entrepreneurs emerged, and a number of entrepreneurial enterprises with extremely high technological competitiveness and wide market application prospects rose strongly. On the road of exploring the mystery of the frontier of science and technology, the new generation of entrepreneurs will have more and more colleagues.

　　Beijing becomes the first city of AI.

　　By October 2022, there were 1,048 artificial intelligence core enterprises in Beijing, accounting for 29% of the total number of artificial intelligence enterprises in China, ranking first in the country, and more than 30 artificial intelligence unicorn enterprises have been born.

　　Twenty-four enterprises in China have been approved to build a new generation of national artificial intelligence open innovation platform, of which 10 enterprises are headquartered in Beijing.

　　There are more than 40,000 core technical talents in the field of artificial intelligence in Beijing, accounting for 60% of the country; The number of artificial intelligence papers published ranks first in the country; Among the top 100 institutions in the world in terms of the number of patents granted, there are 30 Beijing-based institutions.

　　The two major industries, medical health and information technology, are becoming the "twin engines" of Beijing’s sophisticated economy under the cross-integration of artificial intelligence platform technology. In 2022, the related output value of Beijing artificial intelligence industry is estimated to be about 227 billion yuan.

　　Hard technology is written into the five-year plan

　　On March 12, 2021, the 14th Five-Year Plan for National Economic and Social Development and the Outline of Long-term Goals in 2035 was officially released, in which it was specifically mentioned that it was necessary to enhance the characteristics of "hard technology" in science and technology innovation board and enhance the function of Growth Enterprise Market in serving growth-oriented innovative and entrepreneurial enterprises.

　　In November, 2021, the Plan for the Construction of Beijing International Science and Technology Innovation Center during the Tenth Five-Year Plan period also proposed to carry out pilot projects of equity investment and venture capital share transfer in depth to guide early investment, hard technology investment and long-term investment; Support the development of market-oriented and specialized hard technology incubators, promote the verification and maturation of scientific and technological achievements, and quickly realize transformation and industrialization.

　　Hard technology refers to the key core technology that needs long-term R&D investment, has a high technical threshold, is difficult to be copied and imitated, and has a significant supporting role for economic and social development. Hard technology is at the high end of the global value chain, which has the characteristics of high intellectual property barriers, high capital investment, high information intensity, high added value of products and high industrial control, and is an important symbol to measure a country’s core competitiveness. At present, the representative fields of hard technology include photoelectric chips, artificial intelligence, aerospace, biotechnology, information technology, new materials, new energy, intelligent manufacturing and so on.(Sun Qiru)

　　Throughout history, infectious diseases have accompanied the process of human civilization and have had a profound impact on human civilization. It can be said that the history of mankind is the history of fighting infectious diseases. As William McNeill mentioned in his book Plague and Man: "Intelligence, knowledge and organization can’t change people’s vulnerability and helplessness in the face of parasitic invasion. Since the appearance of human beings, infectious diseases have followed, and when human beings still exist, infectious diseases will exist. Infectious diseases used to be, and will certainly be, one of the most basic determinants affecting human history. "

　　Since the founding of New China 70 years ago, China has made remarkable achievements in economic, social, scientific and technological fields. Among them, experts and scholars in the fields of infectious diseases and parasitic diseases in China have made outstanding contributions to the prevention and control of infectious diseases and the improvement of people’s health. In 2018, CCTV’s "Go Around China" column produced the documentary "Never Stop Epidemic War", which recorded the wars between medical and health personnel and infectious diseases in China.

　　Here, we invite Professor Wang Guiqiang, the current chairman of the Infectious Diseases Branch of the Chinese Medical Association and the director of the Infectious Diseases Department of the First Hospital of Peking University, to sort out those things in the field of infectious diseases in China in the past 70 years. Those people … …

　　At the beginning of the founding of New China, infectious diseases such as smallpox, plague, cholera, schistosomiasis and kala-azar were rampant in China, seriously endangering people’s health. The China Municipal Government attaches great importance to the prevention and control of infectious diseases, and has successively issued a series of principles and policies to organize national efforts to prevent and control infectious diseases. In 1980s, with the classical infectious diseases being gradually controlled, the diagnosis and treatment of viral hepatitis and liver disease became the main work of infectious diseases doctors. From the 1990s to the early 21st century, with the inclusion of hepatitis B vaccination in planned immunization and the popularization of various antiviral treatments, the infectious diseases department began to return to the essence of big infection, and the focus of its work gradually shifted from the diagnosis and treatment of viral hepatitis and liver disease to the construction of big infection discipline focusing on the improvement of the diagnosis and treatment ability of bacteria and fungi.

　　First, the classic achievements:

　　These achievements are worth remembering.

　　(1) Eradication of smallpox

　　Smallpox is a severe infectious disease caused by smallpox virus, with a mortality rate as high as 25%. As early as the 10th century, China invented human pox vaccination. In 1688, Russia sent doctors to Beijing to study human pox vaccination, and human pox vaccination began to spread all over the world. Human pox vaccination has protected many people’s lives, but the vaccinated people still have a mortality rate of 2%. In 1796, edward Cenna, a British doctor, successfully vaccinated an 8-year-old boy with vaccinia, which ushered in a new era of vaccination against smallpox.

　　From January to August, 1950, there were 44,211 cases of smallpox in China, which were distributed all over the country. In that year, 7,765 people died of smallpox. In order to eliminate smallpox, in October 1950, the Central People’s Government issued the "Instructions on Launching Autumn Vaccination Campaign" issued by Premier Zhou Enlai, and made a decision to promote universal vaccination throughout the country. Subsequently, the Ministry of Health promulgated the "Interim Measures for Vaccination" to promote free vaccination in the whole country.

　　In 1950, the vaccination rate of smallpox in Beijing reached 80%, making it the first city in China to eliminate smallpox. By 1952, more than 500 million people had been vaccinated against vaccinia all over the country. By 1958, the number of smallpox cases in China had dropped sharply to more than 300.

　　In the spring of 1959, six people brought smallpox from Myanmar to Danjia Dazhai, Danjia District, Cangyuan County, Yunnan Province. Subsequently, two people brought smallpox to Cangyuan County, Yunnan Province from abroad. This time, the smallpox epidemic caused 672 people to get sick and 96 people died. This is the last outbreak of smallpox in China. With the recovery of the last case of smallpox in China in 1961, there was no case of smallpox in China.

　　In 1966, WHO decided to launch a global smallpox eradication campaign at the 19th World Health Assembly, and adopted a resolution to eradicate smallpox. On October 26th, 1977, the last smallpox patient in the world, Somali cook Ali Mao Martin, was cured. On May 8, 1980, WHO announced at the 33rd World Health Assembly held in Nairobi, Kenya, that smallpox, which had been harmful to human beings for thousands of years, had been eradicated. Since then, the global vaccination has stopped. Smallpox was eliminated in China more than ten years earlier than that in the world.

　　(2) Prevention and control of schistosomiasis

　　Schistosomiasis japonica has a history of more than 2100 years in China, and it is a zoonotic parasitic disease that seriously harms human health and social and economic development. In the early days of the founding of New China, schistosomiasis was prevalent in 370 counties (cities) in 12 provinces, municipalities and autonomous regions in southern China, with a total of 11.6 million infected people, an area of 14.8 billion square meters of snails and a threatened population of more than 100 million.

　　From the founding of New China to the early 1970s, comprehensive measures were mainly taken in China, including snail control and treatment with antimony potassium tartrate. Although the breeding grounds of snails were significantly reduced and the number of infected people decreased significantly, schistosomiasis was not eliminated, and antimony potassium tartrate had a long course of treatment and was highly toxic to the heart and liver. In the mid-1970s, praziquantel, a highly effective and low toxic therapeutic drug, came out, which greatly improved the prevention and control of schistosomiasis, and greatly reduced the prevalence and morbidity. Since 1990s, the strategy of schistosomiasis control in China has been adjusted to take praziquantel and health education for a large number of people.

　　Prevention and control of schistosomiasis is a long-term project. In 2001, WHO thought that the overall strategy of global schistosomiasis control was to reduce the harm of the disease rather than eliminate it, but it regarded schistosomiasis as a disease that could be partially eliminated. Through the comprehensive prevention and control measures focusing on the control of infectious sources, and the Outline of the National Medium and Long-term Plan for the Prevention and Control of Schistosomiasis (2004— The effective implementation of "2015)" has effectively promoted the process of schistosomiasis elimination in China. In 2008, the country reached the standard of schistosomiasis epidemic control, and in 2015, it reached the standard of schistosomiasis transmission control. Since then, the prevention and control of schistosomiasis in China has moved towards transmission blocking and even elimination.

　　After 2016, the endemic areas of schistosomiasis in China will continue to adhere to the working principle of "prevention first, treating both the symptoms and root causes, classified guidance, comprehensive management, joint prevention and control", implement comprehensive prevention and control strategies based on the control of infectious sources according to local conditions, and strive to achieve the 2020 goal set in the 13 th Five-Year National Schistosomiasis Prevention and Control Plan — — By the end of 2020, 96.5% of schistosomiasis endemic counties (cities, districts) in China have reached the standard of transmission interruption or elimination, among which more than 75% of endemic counties (cities, districts) have reached the standard of elimination, and all endemic counties (cities, districts) in China have reached the standard of "Healthy China 2030".

　　(3) Prevention and treatment of tuberculosis

　　Tuberculosis is a chronic infectious disease with the longest history and the largest number of deaths. Before the invention of anti-tuberculosis drugs such as streptomycin in the 1940s, tuberculosis was almost incurable.

　　As early as 1933, China established the China Tuberculosis Association and opened tuberculosis clinics in some cities. In 1937, the Tuberculosis Branch of Chinese Medical Association was established. In 1949, there were 12 prevention and treatment institutions in China, with more than 600 beds, 29 X-ray machines and 120 medical staff specializing in tuberculosis prevention. At that time, the prevalence rate of tuberculosis in China was as high as 17.5 million/100,000, and the mortality rate was 2 million/100,000.

　　After the founding of New China, the Central Institute of Tuberculosis Prevention and Control and the BCG Promotion Committee were successively established in Beijing. Tuberculosis prevention institutions at all levels have been gradually enriched and developed. By the mid-1960s, the morbidity and mortality of tuberculosis in big cities such as Beijing and Shanghai had dropped to the same level as that in Japan. The results of the first national tuberculosis epidemiological sampling survey in 1979 showed that the prevalence rate of active tuberculosis in China was 7.17/100,000, and the prevalence rate of smear-positive tuberculosis was 1.87/100,000, which was significantly lower than that in 1949.

　　Since 1981, the state has formulated and implemented three national ten-year plans for tuberculosis prevention and control. In January 2005, the tuberculosis management information system was launched. In 2011, the General Office of the State Council issued the National Tuberculosis Prevention and Control Plan (2011— 2015). In 2013, the former Ministry of Health issued the Management Measures for Tuberculosis Prevention and Control.

　　In recent years, the rising trend of tuberculosis epidemic in China has been effectively curbed, and the prevention and treatment of tuberculosis has made remarkable achievements. The fifth national tuberculosis epidemiological sampling survey in 2010 showed that the prevalence rate of active tuberculosis in China was 4.59/100,000, of which the prevalence rate of infectious tuberculosis was 66/100,000, which was 64% lower than that in 1979.

　　(D) Hepatitis B vaccination into the national immunization program.

　　China is a high epidemic area of hepatitis B. The second national hepatitis B serological survey in 1992 showed that the positive rate of HBsAg was 9.75%.

　　In the early 1990s, Professor Tian Gengshan and Academician Zhuang Hui made suggestions to the country, emphasizing the importance of hepatitis B vaccination. In 1992, the former Ministry of Health formally brought hepatitis B vaccination into the planned immunization management, and at the same time promulgated the National Hepatitis B Vaccination Implementation Plan. In 2002, hepatitis B vaccine was included in the national immunization plan, and newborns were provided with hepatitis B vaccine free of charge, and newborns were required to be vaccinated within 24 hours after birth.

　　In 2006, in order to evaluate the effect of incorporating hepatitis B vaccine into the national immunization program, the former Ministry of Health organized a national hepatitis B seroepidemiological survey. The results showed that the HBsAg positive rate of children at birth decreased from 9.67% in 1992 to 0.96% in 2005, a decrease of 90%. In May 2012, China achieved the goal of controlling the HBsAg carrying rate of children under 5 years old to below 2% through the verification of WHO Western Pacific Region, and achieved the goal of controlling the HBsAg carrying rate of children under 5 years old to below 1% by 2017 ahead of schedule.

　　In recent years, the vaccination rate of neonatal hepatitis B vaccine in China has remained above 95%, and the infection rate of children has decreased significantly year by year. In 2014, the fourth national hepatitis B serological survey showed that the HBsAg positive rate of children aged 1-4 years in China was 0.3%, which was over 60% lower than that in 2006.

　　(5) Prevention and treatment of viral hepatitis and liver disease

　　The development of viral hepatitis and liver disease in recent years is inseparable from the dedication of a large number of experts in infectious diseases in China.

　　In 2000, at the National Viral Hepatitis Conference held in Xi ‘an, Professor Si Chongwen, Chairman of the Sixth Committee of Infectious Diseases Branch of Chinese Medical Association, led the updating of the Viral Hepatitis Prevention and Control Program. In 2005, Professor Weng Xinhua, Chairman of the Seventh Committee of Infectious Diseases Branch of Chinese Medical Association, and Academician Zhuang Hui, Chairman of Hepatology Branch of Chinese Medical Association, jointly compiled and published the Guidelines for Prevention and Treatment of Chronic Hepatitis B and Hepatitis C.. The publication of these two guidelines has made positive contributions to the prevention and treatment of viral hepatitis in China and guided the clinical practice in the whole country. Since then, the guidelines have been updated successively in 2010 and 2015, and the fourth edition of Guidelines for the Prevention and Treatment of Chronic Hepatitis B and Guidelines for the Prevention and Treatment of Hepatitis C are currently being updated.

　　1. Hepatitis A

　　Hepatitis A is a worldwide public health problem caused by hepatitis A virus (HAV) infection, which is mainly transmitted through fecal-oral route. Its prevalence is closely related to social and economic development, living habits, sanitary conditions and vaccination. In 1988, the world’s largest outbreak of hepatitis A occurred in Shanghai, with more than 300,000 people infected. With the rapid development of China’s economy and the improvement of people’s living conditions, hepatitis A vaccine was included in the national planned immunization in 2007, and most areas in China have changed from high-prevalence areas to medium-or low-prevalence areas.

　　2. Hepatitis B

　　With the introduction of hepatitis B vaccine into the planned immunization in 1992, the incidence of hepatitis B in China dropped sharply. During the three national surveys in 2014, the HBsAg positive rate of people aged 1-29 in China decreased from 10.1% to 2.6%.

　　Half of the world’s liver cancer patients are in China, and more than 80% of them are caused by hepatitis B. Effective prevention and control of hepatitis B can effectively reduce the occurrence of liver cancer, and it is also a successful case of preventing tumors through vaccines.

　　Although hepatitis B has not been completely cured, it is controllable. With the development of new drugs, patients with chronic hepatitis B can effectively control the progress of the disease, block the progress to cirrhosis and liver cancer, and even reverse some decompensated cirrhosis to compensatory cirrhosis and maintain stability.

　　In 2014, the fourth national hepatitis B serological survey showed that the positive rates of HBsAg among people aged 1-4, 5-14 and 15-29 were 0.3%, 0.9% and 4.4% respectively. It can be seen from this data that the incidence of hepatitis B virus infection has been effectively controlled by hepatitis B vaccination in the younger age group. It is believed that with the passage of time, the occurrence of hepatitis B virus infection will eventually be eliminated.

　　3. Hepatitis C

　　Hepatitis C is a chronic disease caused by hepatitis C virus (HCV) infection. The disease progresses continuously and can develop into cirrhosis and liver cancer. In recent years, a large number of direct antiviral drugs (DAA) have been put on the market, and hepatitis C has become a curable chronic viral disease, setting a precedent for curing chronic viral diseases through drug treatment intervention. Of course, there are still some problems in its treatment, such as drug accessibility and drug interaction.

　　HCV infection in China is a low epidemic area in the world. The national seroepidemiological survey in 2006 showed that the positive prevalence rate of HCV antibody was 0.43% among people aged 1-59. HCV is mainly transmitted through blood and damaged skin and mucosa. In China, HCV antibody screening for blood donors began in 1993, and HCV RNA screening for blood donors with negative HCV antibody began in 2015. Since then, transmission through blood transfusion and blood products has rarely occurred.

　　Hepatitis C progresses slowly and invisibly, and is often called "silent killer". Patients often lose the best opportunity for treatment as soon as they find cirrhosis or liver cancer. Therefore, people with high risk of HCV infection should take the initiative to go to the hospital for screening.

　　4. Hepatitis D

　　Hepatitis D is an acute and chronic hepatitis disease caused by hepatitis D virus (HDV), which is contagious. HDV is a small RNA virus with gene defect, and its replication and transmission must depend on the existence of hepatitis B virus (HBV). Compared with HBV infection alone, HDV with HBV infection is more serious and can rapidly progress to cirrhosis or even liver cancer. Because its infection depends on HBV, improving the vaccination rate of HBV is an effective measure to prevent HDV infection.

　　5. Hepatitis E

　　Diseases that are "from mouth to mouth" have a relatively high incidence among the elderly. Outbreaks or pandemics often occurred in China before 2000. After 2000, with the improvement of China’s economic level and health facilities, its epidemic was controlled, but attention should be paid to preventing local outbreaks.

　　(6) Prevention and control of epidemic hemorrhagic fever

　　Epidemic hemorrhagic fever, also known as hemorrhagic fever with renal syndrome, is caused by a group of viruses belonging to Hantavirus. Rats are the main source of infection and spread in many ways, with fever, hypotensive shock, congestive bleeding and renal damage as the main manifestations. An epidemic broke out in China in 1980s, with an annual incidence of more than 100,000 cases and a mortality rate of over 10%.

　　The Party and the state attach great importance to the prevention and treatment of epidemic hemorrhagic fever. Under the leadership of the former Ministry of Health, the Branch of Infectious Diseases and Parasitology of the Chinese Medical Association established the epidemic hemorrhagic fever study group. As Professor Dan Ping served as the team leader, it organized domestic clinical experts to carry out clinical diagnosis and treatment research on hemorrhagic fever. The prevention and treatment plan of epidemic hemorrhagic fever in China was formulated, and a series of effective diagnosis and treatment plans such as preventive treatment were put forward, which greatly reduced the incidence and mortality of hemorrhagic fever.

　　Second, pay tribute to the predecessors:

　　They have made outstanding contributions to the development of infectious diseases in China.

　　After the founding of New China, many predecessors made great contributions to the prevention and treatment of infectious and parasitic diseases in China.

　　(1) Zhong Huilan

　　The first honorary chairman of the branch of infectious diseases and parasitology of Chinese Medical Association. Physicians, tropical pathologists and medical parasitologists devoted their lives to the study of internal diseases, especially tropical diseases, and made pioneering research on the etiology, epidemiology, clinical diagnosis, treatment and prevention of relapsing fever, typhus, kala-azar, paragonimiasis and leptospirosis. Established the Institute of Tropical Diseases of Beijing Friendship Hospital. The pathogens of epidemic typhus and endemic typhus were separated, and it was confirmed that crabs could also spread typhus. It is suggested that bone marrow puncture instead of spleen puncture and complement fixation test should be used for early diagnosis of kala-azar. We cooperated with Feng Lanzhou to study the vector of kala-azar, and confirmed that the sandfly is the main vector of kala-azar near Beijing. To confirm the role of dogs as storage hosts in transmission. In the study, I was infected by accident, and combined with my experience and observation of other cases, I put forward the clinical types of early manifestations of kala-azar. A series of diagnosis and treatment norms have been formulated to guide clinical diagnosis and treatment.

　　(2) Wu Chaoren

　　He used to be the vice president and director of internal medicine of the First Hospital of Peking University (formerly the First Affiliated Hospital of Beijing Medical College), and he had high attainments in bacteriology research. In 1955, he founded the Infectious Diseases Department of the First Hospital of Peking University, and established the virus research room, parasitic disease research room and antibiotic research room (predecessor of Peking University Institute of Clinical Pharmacology). After 1963, he mainly conducted clinical antibiotic research, which made contributions to the development of antibiotic clinical research in China. Participate in the editor-in-chief of Infectious Diseases and other works. Together with Professor Zhong Huilan and Professor Cao Zhongliang, they set up the Infectious Diseases and Parasitology Group of the Chinese Medical Association (the predecessor of the Infectious Diseases Branch of the Chinese Medical Association), actively carried out academic exchange activities, and held the first national academic conference on viral hepatitis in Changchun in 1962 and the first national academic conference on infectious diseases in Huangshan in 1963, which made great contributions to the development of infectious diseases.

　　(3) Wang Jiwu

　　The first chairman of the Branch of Infectious Diseases and Parasitology of Chinese Medical Association, a famous expert in internal medicine and infectious diseases and medical educator, the founder of the Department of Infectious Diseases and Parasitology of Zhejiang University, edited the first infectious diseases masterpiece — — Epidemiology has played an important role in the training of talents and teachers in the field of epidemiology, as well as in the diagnosis and treatment of schistosomiasis, viral hepatitis and leptospirosis.

　　(4) Cao Zhongliang

　　As a famous medical educator and infectious disease scientist in China, from controlling cholera epidemic before the founding of New China to eliminating schistosomiasis after the founding of New China, as a leading figure in southwest China, he personally organized diagnosis and treatment on the spot. When there was a leptospirosis epidemic in Sichuan in 1958, he went to the scene to rescue critically ill patients, and then insisted on field research for 30 years. In the field of leptospirosis pulmonary hemorrhage, Huaxi Medical College has established a leading position at home and abroad. Viral hepatitis, especially severe jaundice ascites hepatitis, was also studied in depth.

　　(5) Mao Shoubai

　　Medical parasite expert, one of the pioneers of schistosomiasis research in China. In the fields of schistosomiasis epidemiology, immunodiagnosis, experimental treatment, snail control methods and schistosomiasis biology, it has achieved practical scientific research achievements recognized by peers at home and abroad. In 1984, he won the "Leon Birna" prize in the 37th World Health Assembly, which was the first time that a Chinese scholar won this honor.

　　(6) Dai Ziying

　　The first vice chairman of the branch of infectious diseases and parasitology of Chinese Medical Association. Firstly, the scheme of treating typhoid fever and paratyphoid fever with low dose of chloramphenicol was put forward. Leading the diagnosis, treatment and research of viral hepatitis and hemorrhagic fever, and the pathogenesis and treatment of sepsis and septic shock. Combining clinical medicine, clinical microbiology and clinical pharmacology, he is the founder of clinical antibiotics in China. Editor-in-chief of Clinical Antibiotics and other works. 1971— In 1972, he led the investigation of clinical application of sulfa drugs, penicillin and streptomycin in China. 1978— In 1981, tetracycline antibiotics were re-evaluated, and suggestions to restrict the use of these drugs were put forward and adopted by the health administrative department. He has made outstanding achievements in advocating the rational use of antibiotics in China.

　　(7) Tian Gengshan

　　Chairman of the Second and Third Committees of Infectious Diseases and Parasitology Branch of Chinese Medical Association. During his tenure as deputy director of the former viral hepatitis expert advisory Committee of the Ministry of Health, he organized domestic experts to make suggestions to the state to carry out hepatitis B vaccination for newborns, which was formally included in the planned immunization management by the Ministry of Health, and played an important role in reducing the incidence of hepatitis B. Organized multi-center clinical trials for many times, creating a precedent for multi-center clinical research in infectious diseases in China. He presided over the formulation of China’s "Virus Hepatitis Prevention and Control Program" twice.

　　(8) Wang Juntao

　　Chairman of the Fourth Session of Infectious Diseases and Parasitology Branch of Chinese Medical Association. He used to be the vice president of Beijing Second Infectious Disease Hospital (Beijing You ‘an Hospital). Focusing on viral hepatitis, he served as the head of the national key project "Pathogenesis of Chronic Active Hepatitis B and Evaluation of Therapeutic Drugs" during the Sixth Five-Year Plan.

　　(9) Wang Aixia

　　Chairman of the Fifth Session of Infectious Diseases and Parasitology Branch of Chinese Medical Association. The first case of AIDS patients and the first case of sexually transmitted human immunodeficiency virus (HIV) infection in China were found and reported, and anti-HIV drugs were first used to treat HIV infection in China. In 1995, the national standards for AIDS diagnosis and treatment were formulated. He was the first in China to study the trend of nosocomial infection bacteria, took the lead in completing the prospective epidemiological investigation of hepatitis C after blood transfusion, and took the lead in proposing to be alert to cross-infection of hepatitis C caused by blood transfusion. First of all, it advocates that the branch of infectious diseases and parasitology should return to the essence of infectious diseases, and the infectious diseases department should be renamed as infectious diseases department.

　　(10) Si Chongwen

　　Chairman of the Sixth Committee of Infectious Diseases and Parasitology Branch of Chinese Medical Association, formally applied to rename the Branch of Infectious Diseases and Parasitology of Chinese Medical Association as Infectious Diseases Branch of Chinese Medical Association during his term of office. During his term of office, he organized experts to revise the Prevention and Treatment Plan of Viral Hepatitis in 2000, which effectively guided clinical practice. The Committee for Young and Middle-aged People was established, and the first national conference for young and middle-aged people with infectious diseases was held. The AIDS group and the artificial liver group were established. Editor-in-chief of the first monograph of Infectious Diseases.

　　(xi) Weng Xinhua

　　The 7th Chairman of Infectious Diseases Branch of Chinese Medical Association, during his tenure, Infectious Diseases and Parasitology Branch of Chinese Medical Association was officially renamed as Infectious Diseases Branch of Chinese Medical Association. In-depth clinical practice and research have been carried out on the etiological diagnosis of long-term unexplained fever, bacterial infectious diseases and viral hepatitis, and the ability of diagnosis and treatment of bacterial and fungal infections in China has been actively promoted. During his tenure as chairman, he presided over the compilation of China’s Guidelines for the Prevention and Treatment of Chronic Hepatitis B and Hepatitis C..

　　(XII) Li Lanjuan

　　The 8th and 9th Chairman of Infectious Diseases Branch of Chinese Medical Association, Academician of China Academy of Engineering. Director of State Key Laboratory of Infectious Diseases Diagnosis and Treatment, Director of Collaborative Innovation Center for Infectious Diseases Diagnosis and Treatment. Editor-in-chief has published 35 monographs such as Artificial Liver, Infectious Microecology and Infectious Diseases, which are the first textbooks in China. He won one special prize of the National Science and Technology Progress Award, one national science and technology progress award (innovation team), two first prizes and two second prizes, and was awarded the titles of "National Excellent Scientific and Technological Worker" and "National Outstanding Professional and Technical Talent", the Science and Technology Progress Award of Heliang Heli Fund, Guanghua Engineering Science and Technology Award and Tan Jiazhen Science Award for Clinical Medicine.

　　(13) Hou Jinlin

　　The 10th Chairman of Infectious Diseases Branch of Chinese Medical Association. During his term of office, he actively promoted the prevention and treatment of viral hepatitis and promoted international exchanges and cooperation. As the chairman of the Asia-Pacific Liver Disease Research Association, he hosted the largest annual meeting of Asia-Pacific liver diseases, which improved the academic discourse power of viral hepatitis and liver diseases research in China in the international arena. Presided over the "small shell" project to strengthen the standardized management of mother-to-child blocking of hepatitis B.

　　Third, towards the future:

　　The road of "big infection" in infectious diseases

　　(1) Learn to change its name,

　　"Infectious Diseases" has officially entered history.

　　In 2002, in order to conform to the development trend of the discipline, under the initiative of many predecessors in the field of infectious diseases, the Chinese Branch of Infectious Diseases and Parasitology was officially renamed as the Infectious Diseases Branch of the Chinese Medical Association, and the website of the Infectious Diseases Branch of the Chinese Medical Association was established, which was the earliest website among the branches of the Chinese Medical Association.

　　At that time, the predecessors of infectious diseases had realized that the infectious diseases discipline in China should change from classical infectious disease prevention and control to viral hepatitis and liver disease diagnosis and treatment, and return to the major infectious diseases discipline. The predecessors saw the development direction of infectious diseases in China in time, and put forward that we should strengthen the capacity building of diagnosis and treatment of bacterial and fungal infections. The renaming of the Society points out the direction for the development of infectious diseases.

　　It can be said that the development of infectious diseases in China has entered the third stage, returning to the essence of infectious diseases, that is, the construction of "big infection" discipline with the improvement of the ability of diagnosis and treatment of bacterial and fungal infections.

　　(B) the construction of the "big infection" discipline,

　　Improving the ability of diagnosis and treatment of bacterial and fungal infections is "king"

　　In fact, as early as 1970s and 1980s, Professor Dai Ziying and Professor Xu Zhaoyue of Shanghai Huashan Hospital realized the importance of improving the ability of diagnosis and treatment of bacterial and fungal infections. They have published many books on the rational use of antibacterial drugs and done a lot of forward-looking work, which laid a solid foundation for the establishment of the Institute of Antibiotics in Huashan Hospital affiliated to Fudan University. Up to now, the Institute of Antibiotics of Huashan Hospital affiliated to Fudan University and the Institute of Clinical Pharmacology of Peking University have played an important role in the research and development of antibacterial drugs, clinical trials and related personnel training in China.

　　At present, the global situation of bacterial drug resistance is grim, and all countries in the world attach great importance to the problem of bacterial drug resistance. An expert group in Britain predicts that if the current situation of bacterial drug resistance is not solved, by 2050, the death of patients caused by drug-resistant bacteria infection will return to the first place in the world.

　　China attaches great importance to the prevention and control of bacterial and fungal drug resistance. In 2012, the former Ministry of Health issued the first "Management Measures for Clinical Use of Antibacterials", which clearly stipulated that infectious diseases departments should participate in the management of rational use of antibacterial drugs. However, the status quo that cannot be ignored is that most infectious diseases doctors in China are still mainly engaged in the diagnosis and treatment of viral hepatitis and liver disease, and the ability of diagnosis and treatment of bacterial and fungal infections needs to be improved urgently.

　　In 2016, the National Health and Wellness Commission issued the "Notice on Improving the Diagnosis and Treatment Capability of Bacterial Fungi in General Hospitals above Grade II", emphasizing that general hospitals above Grade II should set up infection departments and establish a diagnosis and treatment system of bacterial fungal infections with infectious diseases as the main body, which provides a clear orientation for the future development of infectious diseases.

　　At the beginning of the 11th Committee of Infectious Diseases Branch of Chinese Medical Association, Chairman Wang Guiqiang clearly put forward the construction plan of infectious diseases discipline, and strengthened the promotion of the ability of diagnosis and treatment of bacterial and fungal infections. On the one hand, it is closely related to the national policy orientation; on the other hand, it shows that the infectious diseases academic circles in China have realized that the infectious diseases academic circles should actively participate in the application and management of antibacterial drugs, especially strengthen their own improvement in the diagnosis and treatment of bacterial and fungal infections, so as to cope with the increasingly severe drug resistance situation of bacterial and fungal infections.

　　(3) Do a good job in the discipline construction of "big infection",

　　Infection department, clinical microbiology and hospital infection control are indispensable.

　　Bacterial and fungal infections are distributed in various clinical departments. In addition to clinical diagnosis and treatment of infectious diseases, the infectious diseases department also provides strong support for the prevention and control of infectious diseases in the whole hospital. If the ability of infection doctors is weak, the ability of diagnosis and treatment of bacterial and fungal infections in the whole hospital will be weak. At present, the state emphasizes the rational use of antibacterial drugs and the control of medical expenses, which will greatly increase the medical expenses, prolong the hospitalization time and increase the mortality rate after the occurrence of concurrent infection, especially drug-resistant bacteria infection. Effective control of infection and effective diagnosis and treatment of infectious diseases can significantly improve the operating efficiency of hospitals. Therefore, from the perspective of hospital management, it is very important to do a good job in the construction of infectious diseases.

　　To do a good job in the construction of "big infection" discipline, on the one hand, the infectious disease discipline should strengthen its own ability improvement and talent echelon construction, on the other hand, it is also very important to do a good job in pathogen diagnosis and nosocomial infection management. Therefore, infectious diseases, clinical microbiology and nosocomial infection management should be organically combined to integrate subject resources, strengthen subject cooperation, and form a joint force to jointly do a good job in the diagnosis and treatment of infectious diseases.

　　In addition, hospital management departments and national health administrative departments should also attach importance to the construction of infectious diseases disciplines and provide corresponding support for the construction of infectious diseases disciplines.

　　Fourth, the outlook

　　At present, although the outbreak of infectious diseases is abnormal, we should always be vigilant and effectively control new and sudden infectious diseases in time. Therefore, on the one hand, the Department of Infectious Diseases undertakes the classical infectious diseases such as public health, prevention and control of classical infectious diseases, and on the other hand, although the incidence of viral hepatitis has been effectively controlled, the existing infected population base is still large, and infectious doctors still undertake a large number of viral hepatitis and liver disease prevention and control work. In addition, infection doctors need to improve the ability of diagnosis and treatment of bacterial fungi and fever of unknown origin, and play a role in the rational use of antibacterial drugs. At the same time, it is hoped that infection doctors will actively participate in the prevention and control of nosocomial infection and the interpretation of clinical microbial results, so as to improve the diagnosis and treatment ability of pathogenic microbial infections in China.

　　Finally, Professor Wang Guiqiang pointed out that the future development direction of infectious diseases discipline has been made clear, and our generation is a connecting link. We hope that through our efforts, the infectious diseases discipline will be built more comprehensively and with stronger capabilities, so as to meet the requirements of the national health strategy and escort the healthy China strategy.

　　Five, subject files:

　　Memorabilia of China Infectious Diseases Department

　　In 1950, the Ministry of Health promulgated the "Interim Measures for Vaccinium Vaccination" to promote free vaccination throughout the country. Beijing promulgated the Interim Measures for the Prevention and Treatment of Infectious Diseases.

　　In 1955, the first Measures for the Management of Infectious Diseases was promulgated and implemented by the Ministry of Health. Infectious diseases departments have been set up in university affiliated hospitals all over the country.

　　In 1961, China announced the complete eradication of smallpox virus, 19 years earlier than the World Health Organization announced that smallpox had been eradicated all over the world.

　　In 1978, the Ministry of Health issued the Regulations of the People’s Republic of China on the Management of Acute Infectious Diseases, which stipulated that there were 25 kinds of infectious diseases in two categories.

　　In 1979, after the founding of People’s Republic of China (PRC), the first masterpiece of epidemiology was published.

　　In 1980, the Branch of Infectious Diseases and Parasitology of Chinese Medical Association was formally established. The Ministry of Health issued the Measures for the Implementation of Vaccination.

　　In 1982, the Ministry of Health issued the National Regulations on Planned Immunization, which clarified the vaccines used and unified the immunization procedures for children.

　　In 1985, the first case of AIDS in China was found among tourists coming to China.

　　In 1989, China’s first Law on the Prevention and Control of Infectious Diseases in People’s Republic of China (PRC) was passed and came into force on September 1st.

　　Since January 1, 1992, hepatitis B vaccine immunization has been popularized all over the country, and it has been gradually incorporated into children’s planned immunization.

　　In 2000, the WHO Western Pacific Regional Polio Eradication Confirmation Committee declared China polio-free.

　　In 2002, the Branch of Infectious Diseases and Parasitology of Chinese Medical Association was officially renamed as the Branch of Infectious Diseases of Chinese Medical Association, and a website was established, which was the earliest website among all branches, and the infectious diseases departments of general hospitals were renamed as infectious diseases departments one after another. The Chinese Academy of Preventive Medicine was renamed China Center for Disease Control and Prevention.

　　In 2003, a large-scale SARS epidemic broke out in China.

　　In 2004, China launched the largest infectious disease surveillance network in the world. The revised Law on the Prevention and Control of Infectious Diseases came into force on December 1st.

　　In 2005, the Guidelines for the Prevention and Treatment of Chronic Hepatitis B and the Guidelines for the Prevention and Treatment of Hepatitis C were released, which were updated in 2010 and 2015 respectively, and the fourth edition is currently being revised.

　　In 2008, the Ministry of Health issued the Guidelines for the Prevention and Control of Hand, Foot and Mouth Disease (2008 Edition), which included hand, foot and mouth disease in the management of Class C infectious diseases.

　　In 2009, the Ministry of Health issued a public announcement, explicitly including influenza A (H1N1) as a Class B infectious disease under the management of the Law on the Prevention and Control of Infectious Diseases, and taking measures to prevent and control Class A infectious diseases.

　　In 2012, the Administrative Measures for Clinical Application of Antibacterials was officially promulgated and implemented on August 1st. The vast majority of counties (cities) in China have basically eliminated leprosy (taking counties and cities as units, the prevalence rate is ≤ 0.01‰ , the average annual incidence or detection rate in recent 5 years ≤ 0.5/100,000) standard.

　　In 2013, the National Health and Family Planning Commission issued the "Notice on Adjusting the Management of Some Legal Infectious Diseases" to include human infection with H7N9 avian influenza as a legal Class B infectious disease; Adjust influenza A (H1N1) from Class B to Class C and bring it into the existing influenza for management; Lift the prevention and control measures for Class A infectious diseases stipulated in the Law on the Prevention and Control of Infectious Diseases for people infected with highly pathogenic avian influenza.

　　In 2016, the only EV71 vaccine that can be used to prevent hand, foot and mouth disease was born in China.

　　In 2018, led by Academician Li Lanjuan, director of the State Key Laboratory of Infectious Diseases Diagnosis and Treatment of Zhejiang University and the Collaborative Innovation Center for Infectious Diseases Diagnosis and Treatment, and jointly completed by 11 units including China Center for Disease Control and Prevention, the project of "Major Innovation and Technological Breakthrough in the Prevention and Control System of Emerging Infectious Diseases Represented by the Prevention and Control of Human Infections with H7N9 Avian Influenza" won the special prize of the 2017 National Science and Technology Progress Award.

　　What was the most appetizing movie in China in 2002? The answer is definitely Zhang Yimou’s martial arts giant "Hero", which is believed to be known by everyone on earth. Because since last year’s "Hero" started shooting, the media all over the country have never stopped. Every time Zhang Yimou walks with his crew, there are reporters chasing him. Although all kinds of tricks have been exhausted, I still can’t get any information from the hero. The reporters’ interviews have become meaningless idolize, and even I can only report to the readers that I saw Maggie Cheung or Zhang Ziyi coming out of which elevator. Can’t help it, who let it be Zhang Yimou’s work? Such a big gold-lettered signboard is hanging there, can it be done without chasing it? Except for the symbolic premiere of Hero in Shenzhen for catching the last bus of the Oscar, those who had their ID cards checked were lucky enough to watch the complete film, and everyone, including the manager of the cinema company and the media, only saw the promo for 2 minutes and 30 seconds at most.

　　Hero, like a thief-proof version, is well-intentioned, but its arrogance is here. When it comes to Hero, I’m sure I know the plot vaguely, but the names of the protagonists, such as Nameless, Flying Snow and Broken Sword, have long been known by heart. What kind of emotional entanglements did Zhang Ziyi have with Tony Leung Chiu Wai and Maggie Cheung in the play? Is Jet Li’s namelessness a true chivalrous man like Zhang Yimou’s? When "Hero" premiered in three cities by charter flight, when the VCD copyright of "Hero" sold for a sky-high price of 17.8 million, and so on, which proved that "Hero" was not overwhelming with news, what we wanted most was to sit in the cinema one day earlier and watch "Hero" in a down-to-earth way. I also wish Zhang Yimou good luck at the Oscars.

Editor: Li Erqing

Recently, car home Taiyuan preferential promotion channel has brought you a wonderful preferential activity. This activity will be held from January 5, 2024 to January 7, 2024 for two days, when you will have the opportunity to enjoy the maximum discount of 131,800 yuan in Taiyuan. Audi A6L is a luxury car with a starting price of 320,000 yuan. If you want to know more about the discount, just click "Check the car price" in the quotation form to get a higher discount. Act quickly, the opportunity is not to be missed!

Audi A6L is a luxury car with an exquisite front design. The air intake grille adopts Audi family design, and the hexagonal air intake grille looks very atmospheric. The overall style is very smooth, the lines are smooth, and the body lines are simple and bright, giving people a very dynamic feeling. The front part is decorated with a large area of chrome, which makes the whole front look more luxurious. In addition, Audi A6L also adopts the design of headlight group and bumper, which makes the whole front more exquisite.

Audi A6L is a medium and large car, with a body size of 5038*1886*1475 and a wheelbase of 3024 mm. The body lines are smooth and beautiful, and the side lines are simple and smooth, showing a high-end atmosphere. The front and rear wheel tracks are 1630mm and 1616mm, respectively. With the tyre size of 225/55 R18, the vehicle is more stable and reliable in driving. Audi A6L’s rim adopts multi-frame design, which has high visual impact and shows a sense of movement and strength.

Audi A6L’s interior design is full of luxury, using high-quality materials and fine craftsmanship. The steering wheel is made of leather and equipped with manual up and down+front and rear adjustment and electric up and down+front and rear adjustment functions, so that drivers can easily find the driving posture that suits them best. The 10.1-inch central control screen has a large size and is equipped with voice recognition control systems such as multimedia system, navigation, telephone and air conditioning, which is easy to operate and use. The front and rear rows are equipped with Type-C and USB interfaces, which are convenient for connecting mobile phones for charging. The seats are made of leather, and the main and co-pilot seats can be adjusted in many directions, such as front and rear adjustment, backrest adjustment, height adjustment and lumbar support. At the same time, the front seats are also equipped with heating, ventilation and massage functions, providing a more comfortable riding experience. In addition, the driver’s seat is also equipped with an electric seat memory function, which is convenient for the driver to adjust the seat position at any time. The second row of seats can also be adjusted for backrest and waist, providing a more comfortable riding experience for the rear passengers.

Audi A6L is equipped with a 2.0T 190 HP L4 engine with a maximum power of 140 kW and a maximum torque of 320 N m.. The car is equipped with a 7-speed wet dual-clutch gearbox, which can provide a smooth shifting experience. This engine has excellent power performance and fuel economy, and also brings comfortable driving experience to drivers.

Under the design of elegant appearance and movement, the Audi A6L has a slender body with a four-ring logo, and its face value is quite online, which is exactly what car home car owners appreciate. In addition to the appearance, the interior is also quite good, and the space is very spacious, especially in the back row, which is quite comfortable to sit on. This makes it possible for both business reception and family travel to enjoy a very comfortable, comfortable and comfortable driving experience. Audi A6L’s high-quality interior and spacious space make it one of the leaders in the luxury car market. We believe that Audi A6L will continue to bring excellent driving experience and unparalleled comfort to more car owners.

　　[Technology], also known as the "blood" of a car, I think anyone who drives a car will know something about it. Especially with the increasing popularity of automobiles, the choice of vehicles has become more and more abundant and diversified, and everyone has paid more attention to engine oil. Today, we will talk with Castrol engineers about how to choose and use engine oil and some basic problems about engine oil. As for how to choose between mineral oil, partially synthetic oil and fully synthetic oil, the answer given by the engineer is "there is no best, only the most suitable".

　　Let me briefly introduce two Castrol engineers who accepted our conversation today. They are Mr. Liu Jianhao (left), technical manager of Castrol vehicle oil products (China), and Mr. Huo Haitao (right), technical support engineer of Castrol.

● What is engine oil? What is the function of engine oil?

　　Let’s start with the most basic question. What is engine oil? Engine oil, that is, lubricating oil, plays a role in lubricating, cleaning, cooling, sealing, reducing wear, damping and buffering, and preventing rust and corrosion. For the basic introduction of engine oil, please click here.

● What are synthetic oil and mineral oil?

　　At present, engine oils on the market are divided into mineral oil, partially synthetic oil (commonly known as semi-synthetic) and fully synthetic oil according to their base oils. Mineral oil is directly refined from crude oil. The oil that has not been artificially added and changed is called mineral oil, and the synthetic oil is made by artificial methods, including cracking and polymerization. If the base oil used to produce engine oil is all made of this kind of synthetic oil, it will be called synthetic engine oil.

　　As for semi-synthesis, the more accurate statement should be partial synthesis. Different "semi-synthetic" engine oil products have different proportions of mineral oil and synthetic oil, not all of which are 50:50, so it is not very accurate to say semi-synthesis. From the perspective of engine oil, it is more willing to call it partial synthesis.

　　In terms of performance, the first is low-temperature fluidity. Even mineral oil and synthetic oil of the same brand have different fluidity at low temperature. The fluidity of synthetic oil is the best, which is helpful for the cold start of vehicles and can also reduce fuel consumption to a certain extent. The second is the high temperature resistance of oil, which has better protection effect for engines that pay attention to high speed performance.

　　The third is volatility. Because all synthetic oils are synthetic, their volatility will be lower than that of mineral oil. Therefore, when in use, people will think that all synthetic oils are more durable, and there will be relatively few cases of high oil consumption. Of course, about the oil consumption, it is also related to the design of the engine.

　　Generally speaking, the engine oil consumption of European cars is indeed higher than that of Japanese cars, which is mainly due to the difference in design. For oil manufacturers, there is no saying which product can completely solve this situation, mainly depending on the design of vehicle manufacturers. Of course, if you think that your car has excessive oil consumption, you can consider trying synthetic oil with a slightly higher viscosity, which may improve to some extent, but it can’t be completely cured.

　　In this regard, China’s national standard "Test Method for Automobile Engine Performance GB/T19055-2003" clearly stipulates that "the rated speed and full-load engine oil/fuel consumption ratio shall not exceed 0.3%". Generally speaking, assuming that the fuel consumption per 100 kilometers of the car is 10L (subject to the published data), the standard of oil consumption per 1000 kilometers is 0.3L, which is lower than this value, which is "reasonable" according to the national standard. Although from our point of view, this value seems a bit too broad, but there is no way, the current implementation standard is this, whether it is reasonable or not, a certain enterprise can only be judged by the relevant competent authorities.

　　After all, as far as the phenomenon of large oil consumption is concerned, the main reason is related to engine design, and choosing different oil can only play an auxiliary role. More importantly, from the perspective of engine oil manufacturers, it is a phenomenon that the oil consumption is high. As for the reasons for "consumption", it is diversified, and this is not something that engine oil manufacturers can judge, but more depends on what the vehicle manufacturers say.

● How do consumers choose engine oil? Is synthetic oil the best?

　　The principle of buying engine oil is "there is no best engine oil, only the most suitable engine oil". First, it is recommended that you use the specifications recommended by the vehicle manufacturer. When you buy engine oil, you must choose the corresponding specifications, and at the same time check whether you have passed the corresponding certification, such as environmental protection grades such as SL, SM and SN and various performance grades. In short, from the perspective of Castrol, we suggest that you choose the corresponding viscosity and grade according to the model recommended by the manufacturer, and also according to your own economic strength.

　　If you care about the price, drive more and change the oil frequently, you can use mineral oil and some synthetic oil, but if you drive less and change the oil only once a year, it is recommended to use a better, fully synthetic oil. As for viscosity grade, for example, some European and Japanese manufacturers, in recent years, for the sake of environmental protection and fuel saving, will recommend the use of low viscosity engine oil such as 5W-20, as long as you follow the manufacturer’s recommendation. Of course, if there is no special provision from the manufacturer, you can choose the engine oil with reference to the vehicle environment. Generally speaking, the common engine oils such as 0W-40, 5W-30 and 5W-40 on the market have strong applicability, which can be suitable for the climate in most parts of China and the use of most vehicles.

　　For old cars that have been driven for more than 10 years and the mileage exceeds 200,000 kilometers or even 300,000 kilometers, we can consider using high-viscosity oils such as 15W-40 and 15W-50. The advantages of this kind of engine oil are that it will be better sealed, it will be easier to maintain oil pressure and reduce engine oil consumption, and most of these oils are mineral oil. If the old car uses low-viscosity engine oil, it may lead to insufficient oil pressure, which can not meet the lubrication needs of the engine and aggravate wear, which is harmful and not beneficial. Therefore, from the point of purchase recommendation, the choice of engine oil is not as expensive as possible, and synthetic engine oil is not a "panacea", but should pay attention to the principle of application, which is called."The right one is the best."After all, everyone’s economic strength and car use concept are different, and it is sometimes an unnecessary waste to think that it is good and expensive. Of course, for base oil, it must be synthetic than mineral.

● How to judge the oil attenuation and what is the reasonable oil change mileage?

　　Castrol engineers said that from the test and research of oil products, the viscosity change, water content, total acid value and total alkali value of oil products are all the basis for considering whether oil products should be replaced, but these are all based on the analysis of oil products in the laboratory. From the owner’s point of view, there is basically no way to detect it from the use experience of the vehicle. Therefore, from the perspective of oil manufacturers, we still follow the recommendation of oil change mileage of vehicle manufacturers, and this data has been demonstrated by manufacturers based on a large number of experimental results.

　　In principle, the oil change cycle of synthetic engine oil is definitely longer than that of mineral oil.Generally, the oil change cycle of mineral oil is about 5,000 kilometers, and the total synthetic oil can be used for about 7,500-10,000 kilometers.. In terms of time, whether it is mineral oil or synthetic engine oil, it should not exceed one year. Of course, the above situation is mainly aimed at the China market. In Europe, the oil change cycle of some cars is really long, ranging from 15,000 km to 20,000 km, and even 30,000 km. This is mainly because the local fuel quality is good, the impurities and sulfur content are low, the local air quality is good, and it is related to the road conditions. The traffic jam cannot be serious, and the oil needed is also a long-term engine oil product, but this is not suitable for the current domestic situation. Of course, except for some European countries, the oil change mileage in most places, especially the United States, Canada and Japan, is not particularly long, basically around 5000-10000 kilometers, which is similar to that in our country.

A few days ago, BYD officially announced that its DM-i glory version was listed, with a price range of 149,800-219,800 yuan, and a total of six models were launched. Like other glory models, the price of Seal DM-i glory version has also decreased compared with before. Not only that, the entry-level 121KM elite model and 121KM luxury model have also been upgraded for configuration.

The appearance of Seal DM-i Glory Edition is consistent with that of the old model, which continues the design concept of "marine aesthetics". The design of the front grille is inspired by the ripples of the waves. Through trapezoidal openings and chrome-plated decorative strips, the boundary of the traditional grille is weakened step by step, and the five parallel lines formed effectively stretch the visual width of the front face.

There is a nose protruding forward above the grille, which presents a visual effect ready to go, and the English logo "BYD" is embedded in the hood. The headlights on both sides are relatively long and narrow, and the far and near lights inside are arranged horizontally, which looks quite unique. The bottom is also equipped with a vertical imitation air inlet decoration, and a segmented vertical light strip is integrated to ensure the sense of movement of the front face, which also helps to further enhance the eye-catching effect after lighting.

The DM-i side of the seal adopts the shape of sliding back, and with the hidden door handle, the visual effect looks quite smooth and dynamic. In terms of body size, the length, width and height are 4980/1890/1495mm, and the wheelbase is 2900mm, which is a B+ class car.

In the car, the glory version of Seal DM-i has not changed either. It is equipped with a 10.25-inch embedded full LCD instrument, and a hood is added above it to prevent reflection. The iconic 15.6-inch adaptive rotatable suspension Pad continues to be equipped, and the whole system is equipped with DiLink 100 system. The system is developed based on 6-nanometer 5G chip, and the CPU computing power is increased to 136K DMIPS, and it supports functions such as full-scene voice, map/wallpaper dual desktop.

In terms of configuration, the two entry-level models add streamer gray interior color matching options, the 121KM elite model is increased, and the 12.8-inch central control panel is upgraded to 15.6 inches; The 121KM luxury model adds adaptive cruise, automatic emergency braking, emergency lane keeping assistance, front seat heating/ventilation, wireless charging of 50W mobile phone, etc.

In terms of power endurance, Seal DM-i Glory Edition continues to provide two plug-in hybrid systems and two endurance versions, consisting of Xiaoyun-plug-in special 1.5L high-efficiency engine/Xiaoyun-plug-in special turbocharged 1.5Ti high-efficiency engine, with EHS electric hybrid system and DM-i super hybrid special power blade battery.

Among them, the 1.5L engine has a maximum power of 81 kW and a peak torque of 135 Nm. It is equipped with a driving motor with a maximum power of 145 kW and a peak torque of 325 Nm, with an acceleration time of 8.2 seconds per 100 km. Under NEDC working conditions, the cruising range of pure electricity can reach 121 km, and the fuel consumption per 100 km is only 3.9 liters under power failure.

1.5Ti engine has a maximum power of 102kW and a peak torque of 231Nm. It is equipped with a driving motor with a maximum power of 160kW and a peak torque of 325Nm. The acceleration time of 100km is 7.9 seconds. It has two pure electric endurance versions of 121km and 200km (NEDC working condition), and the corresponding fuel consumption of 100km under power failure is 4.2L and 4.4L respectively.

Seal DM-i is the first B+ hybrid car of BYD Ocean Network, which has a more fashionable and sporty appearance, while the interior of the new car pays more attention to the creation of luxury texture, focusing on the relatively young market. Since its listing in September last year, its sales volume has also been considerable. After the launch of the Glory Edition, the starting price threshold will be lowered to 149,800 yuan, which is bound to further enhance the market competitiveness and sales volume of this car.

Recently, news came from the Korean entertainment circle. Song Joong Ki, a famous actor, has officially announced that Mr. and Mrs. Song Joong Ki are welcoming their second child.

The news quickly triggered widespread discussion and attention on social media. Many netizens expressed their views on this, and some people ridiculed the amazing speed of their family planning.

Looking back on Song Joong Ki’s personal life history, he married his colleague Song Hye Kyo in 2017. Unfortunately, the marriage ended after only one year and eight months. In June last year, Song Joong Ki got married for the second time and welcomed her first child at the beginning of the year. Now, the news of another newborn baby makes people sigh how quickly the couple’s lives have changed.

When he became a father, Song Joong Ki’s image changed obviously. The public often sees him and his wife go out shopping and take care of the children, showing a warm and affectionate look different from the past. This change seems to show that the new members of the family have had a far-reaching impact on his lifestyle. For the new stage of Song Joong Ki’s life, the public’s eyes also turned to his ex-wife Song Hye Kyo. Some netizens speculated that the divorce between Song Joong Ki and Song Hye Kyo may be related to their differences on whether to have children. Considering that Song Hye Kyo is four years older than Song Joong Ki, and shows greater ambition in his career, such speculation has aroused a certain resonance among the public.

In today’s society, giving birth to a child is a great choice full of challenges and pressures for individuals. Marriage and childbearing are essentially private decisions, which should be made by the parties according to their own circumstances and wishes. The diversity of life paths means that personal choices should not be influenced or imposed by external expectations. A happy and harmonious marriage cannot be measured only by whether there are children, but by the joint efforts and management of partners. It is a misunderstanding of the nature of marriage to regard childbirth as the guarantee of a happy marriage.

With the progress of society, the pressure of society on marriage and childbirth is gradually increasing, which reflects the disrespect for individual’s free choice. Modern society advocates pluralistic values and tolerant mentality, and believes that everyone has the right to live according to his own wishes without unreasonable interference from the outside world. Excessive interference in other people’s lives will only cause resentment and anxiety. For parents, it is a valuable experience to grow up happily with their children and learn how to love and tolerate. However, we should also realize that choosing not to have children does not mean that life is incomplete. True love is mutual appreciation and support, not the existence of blood relationship.

Song Joong Ki’s decision to form a new family is the embodiment of individual freedom and the choice of respecting the principle of individual autonomy. Song Hye Kyo’s single status doesn’t mean that her life lacks value or happiness. In fact, her choice should be respected and blessed.

When paying attention to the private lives of public figures, we should perhaps reflect more on our expectations and goals. It is very important for everyone to know what kind of life they are pursuing and how to achieve these goals. The road of life is very different, and it is these differences that constitute the diversity and richness of the world. As long as we stick to ourselves and go our own way bravely, our life will be full of infinite possibilities and hopes.

Editor in charge:

[Truck House Original]All along, the replacement and maintenance are mainly based on the form mileage and service time. With the change of bad environment, the filter element may be dirty in advance, so how can we judge whether the filter element needs to be replaced? In fact, we can also judge the condition of the filter element through the air filter blockage indicator.

● 　Air filter sensor lights alarm lamp to remind maintenance in time.

At present, many cars are equipped with air filter clogging sensors, which will light up the alarm lights on the dashboard in time to remind drivers to replace air filters in time.

For example, the switch is mainly composed of diaphragm, trigger bar, indicator light connector and so on, and its structure is very simple. It also greatly facilitates the maintenance of the air filter. But such a simple sensor is not equipped in many cars.

● 　Independent installation of air filter clogging indicator has great effect.

Of course, in addition to the sensor, there is also an independently installed filter plug indicator, whose working principle is to indicate the filter plug degree by using the negative pressure change in the air cleaner. When dust blocks most of the holes of the filter element and the filtering resistance of the filter element increases to a certain extent, the indicator will appear red.

Because some models do not have filter elements themselvesblock upIndicator, in order to facilitate vehicle maintenance, this filter is added to Jiefang J6 of forum card friend "The End of the Sea".block upIndicator.

Because at present, different filter elementsblock upThe indicator models are different, and its measuring range is also different. Relevant standards stipulate that the maximum air intake resistance of air filtration is 6-6.25kPa, that is to say, when the air intake resistance exceeds this value, air filtrationblock upThe indicator should display a red logo, so it is necessary to pay attention to whether the measurement range of the air filter clogging indicator is correct when purchasing.

● 　filter cartridgeblock upSensor installation position between filter element and intake pipe

filter cartridgeblock upThe indicator is installed between the air cleaner and the intake pipe. take for example
A filter element pollution indicator is installed behind the cab and connected to the air intake duct through a hose.

● 　filter cartridgeblock upThe use of indicator observation window maintenance needs to be adjusted.

When the filter elementblock upWhen the window on the indicator shows a red sign, it indicates that the paper filter element has been blocked by dust and dirt, and the air filter needs to be cleaned or replaced at this time. After replacing the air filter element, you need to press the button and readjust it.block upIndicator, make the filter elementblock upThe indicator window displays a sign indicating that the air filter element is working normally.

● 　filter cartridgeblock upThe two methods of indicator performance check are simple.

Check the filter elementblock upPerformance method of indicator: Remove filter element.block upIndicator, and then suck it with your mouth. If the red sign appears immediately, it means it works normally. Or put the filter elementblock upThe air inlet of the indicator is blocked, so that it can run at a medium speed. If a red sign appears, it means its performance is good.

● 　Conclusion:

Although the structure of the filter plug indicator is also very simple, if the vehicle is equipped with this indicator, it will undoubtedly be very convenient for users to maintain the air filter of the vehicle, but unfortunately, many cars are not equipped with this indicator. Of course, if you are interested, you can also buy and install it yourself. (Text/Figure Yang Jianwei)

● 　Related reading:

The basics of trucks are introduced about the air intake system.

http://www.360che.com/tech/140416/30652.html

Air pre-filter for engine protection in dust environment

http://www.360che.com/tech/140307/29996.html

[Autohome Shangrao Promotion Channel] In Shangrao, a large promotion is underway, with a maximum discount of 28,000 yuan and a minimum starting price of 188,600 yuan. Consumers can get higher discounts by clicking the "Check Car Price" button in the quotation form.

eπ008的外观设计充满力量感，前脸部分采用锋利的线条和独特的进气格栅设计，营造出强烈的视觉冲击力。整体风格简洁而富有科技感，流畅的车身线条和低矮的车身姿态使其在路上显得格外引人注目。

eπ008以其5002*1972*1732mm的车身尺寸和3025mm的轴距，展现出宽敞的内部空间和大气的外观设计。车侧线条流畅，搭配265/45 R21规格的轮胎和21英寸的轮圈，进一步提升了车辆的运动感和视觉冲击力。

eπ008的内饰设计兼具现代感与舒适性，采用皮质方向盘，支持手动上下和前后调节，带来良好的握持感和驾驶体验。中控台配备15.6英寸高清触控屏，集成了多媒体系统、导航、电话和空调的语音识别控制系统，操作便捷，信息一目了然。座椅采用高品质仿皮材质，主驾和副驾座椅提供丰富的调节选项，包括前后调节、靠背调节、高低调节和腰部支撑调节，具备加热、通风功能，其中主驾座椅还配备了头枕扬声器，提升驾乘舒适度。前排和后排均配备电动座椅记忆功能，方便驾驶员和乘客调整至最舒适的坐姿。第二排座椅可前后调节和靠背调节，还具备腿托调节功能，提供更灵活的空间布局。此外，车内还设有多个USB和Type-C接口，包括前排2个和后排3个，支持手机无线充电功能，确保驾驶过程中的便利性。

eπ008搭载了一台1.5T涡轮增压发动机，最大功率为108kW，最大扭矩为210N·m，以强劲的动力输出满足驾驶者对动力的需求。采用先进的L4发动机技术，与电动车单速变速箱搭配，提供平顺、高效的驾驶体验。

汽车之家车主表示，eπ008的颜色是向阳金，外观大气、中规中矩，不会出错。送的21寸马牌轮胎，让下身更扎实。车尾造型增加了后备箱空间，他给予高度评价。

　　[car home Industry] See you in car home E Week to learn about the weekly events in the automobile industry. At the beginning of December, various car companies successively disclosed their sales performance in November. Judging from the information available at present, BYD’s sales in November continued to triumph, with 230,400 new cars sold, up 134.3% year-on-year, setting a new record; In terms of new forces, Weilai and Ideality also set new delivery records, while Tucki, which had previously ranked first in sales within the new forces, fell by over 60% year-on-year.

　　In addition, Tesla announced the recall of 430,000 domestic Model 3/Model Y；; Xiaomi, who once insisted on self-driving full-stack self-research, was told to temporarily abandon the full-stack self-research plan and seek help from suppliers; With the recurrence of the epidemic, the inventory of domestic dealers has increased again; Baowo Automobile, revived seven years ago, declared bankruptcy again … What other hot events are there this week? Let’s take a look.

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■ In November, the transcripts of new energy vehicle companies were released.
■ The dealer inventory early warning index rose again in November.
■ Domestic Tesla reproduces large-scale recall.
■ Less than 7 years after his resurrection, Baowo went bankrupt again.
■Xiaomi Auto Autopilot R&D blocked?

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In November, the transcripts of new energy vehicle companies were released.

BYD: 230,427 vehicles

　　A few days ago, BYD released the November production and sales express. Data show that BYD Auto sold 230,427 vehicles in November, a year-on-year increase of 134.3%. Among them, a total of 22,942 passenger cars including exports were sold, up 136.5% year-on-year. So far, the cumulative sales volume of BYD’s new energy vehicles has reached 3.1 million.

Song PLUS』

　　In terms of sales structure, 116,027 plug-in hybrid vehicles were sold in November, up 163.8% year-on-year; The sales volume of pure electric vehicles reached 113,915, a year-on-year increase of 146.9%. In terms of specific models, the Song family sold 64,145 vehicles in November, of which 57,146 were plug-in hybrid models; The sales volume of the Han family was 31,786, and the monthly sales exceeded 30,000 for three consecutive years; The Qin family sold as many as 28,320 vehicles in November; Dolphins sold 26,063 vehicles in November; The monthly sales of Tangjia people exceeded 20,000 vehicles for the first time, reaching 20,020 vehicles; (|) sold 15,356 vehicles in November.

Gac ean: 28,765 vehicles.

　　On December 1st, GAC Aian released the sales results in November first: 28,765 vehicles, up 91% year-on-year; From January to November, the cumulative sales volume was 241,149 vehicles, a year-on-year increase of 128%, and the goal of doubling the annual sales volume was achieved ahead of schedule. One day before the publication of this sales report card, the company announced that it would raise the price of its models, ranging from 3,000 to 8,000 yuan. The reason for the price adjustment is due to the decline of subsidies for new energy vehicles next year and the increase in the price of battery raw materials. In addition to GAC Ai ‘an, BYD, Changan Deep Blue and Geely Automobile also announced the increase of vehicle prices. I don’t know how the fuel vehicle purchase tax, which will continue to be reduced next year, and the subsidy for new energy vehicles will affect the sales of new energy vehicles.

Nezha: 15,072 vehicles.

　　Nezha is still the sales champion of new power enterprises in November, and delivered 15,072 new cars that month, up 51% year-on-year and down 16.34% month-on-month. From January to November this year, enterprises delivered a total of 144,278 vehicles, a year-on-year increase of 142%. The improvement of delivery volume is inseparable from the growth of channels. Data show that in the first half of this year alone, 189 new stores were opened in Nezha. According to the previous plan, the company will increase the number of city partner stores to 450 and open 150 new direct stores this year.

Ideal: 15,034 vehicles

　　In November, the ideal delivery volume reached 15,034 vehicles, an increase of 11.5% year-on-year, setting a record for single-month delivery. On November 27th, the company also issued "Notes on Delayed Delivery of Some Users", saying that due to the delay in supply of core spare parts, some orders delivered at the end of November were postponed to December. The above-mentioned sales performance also verified the market appeal of the ideal L8 and L9 new cars, and if there were no supply chain problems, they could still achieve better results.

Weilai: 14,178 vehicles

　　The data shows that Weilai delivered 14,178 new cars in November, a record high, with a year-on-year increase of 30.3% and a quarter-on-quarter increase of 40.9%; From January to November, 2022, Weilai delivered more than 100,000 vehicles, a year-on-year increase of 31.8%, and this is the first time that Weilai’s annual sales exceeded 100,000 vehicles since its establishment.

　　Previously, when Weilai ET5 was listed, Weilai officially said that this car would be benchmarked against BMW 3 Series at the market level. Judging from the current performance, although the specific sales volume of Weilai ET5 has not been announced, the delivery volume of three new models ET7, ES7 and ET5 of the second-generation technology platform NT2 is rising steadily, with a total delivery volume of 11,072 vehicles in November.

Extreme krypton: 11,011 vehicles

　　In November, with a ZEEKR 001 car, the monthly sales of Krypton exceeded 10,000 for the second consecutive month, reaching 11,011 vehicles. Previously, the sales target set by the company for 2022 was 70,000 vehicles, and the sales volume reached 60,604 vehicles from January to November, and the sales target was completed soon. It is reported that the rise of krypton sales is inseparable from the return to normal supply chain. Now the delivery cycle of ZEEKR 001 has been shortened to 4-6 weeks, and the orders in the first half of December will also strive to be delivered before the end of the year.

『ZEEKR 001』

AITO：8260 vehicles

　　In November, the delivery volume of AITO brand was 8,260 vehicles, down 31.3% from the previous month. It failed to continue the previous trajectory of breaking 10,000 for three consecutive months, and this is the first time that the AITO brand has experienced a decline in sales since it started delivery in March. According to the official explanation, the reason for the decline in sales volume is that due to the epidemic situation and tight supply chain, the production of Cyrus Chongqing factory has been under certain pressure, which has affected the delivery.

Zero run: 8047 vehicles

　　Zero Run delivered 8,047 vehicles in November, a year-on-year increase of 42.98%, but there is still a little gap compared with the previous rhythm of breaking 10,000. From January to November, the cumulative delivery of zero-run vehicles exceeded 100,000 vehicles, with a year-on-year increase of over 185%. From the channel point of view, Zero Run opened 31 stores nationwide in November. As of November 25th, the total number of stores in this enterprise was 548, covering 173 cities.

"Zero run C11』"

Tucki: 5811 vehicles.

　　On November 30th, Xpeng Motors disclosed the financial report for the third quarter of 2022. It shows that the revenue in the third quarter was 6.82 billion yuan, up nearly 20% year-on-year and down 8.2% quarter-on-quarter; The net loss was 2.38 billion yuan, up 49% year-on-year and 12% quarter-on-quarter. In the third quarter, the delivery volume was 29,600 vehicles, up 15% year-on-year and down over 10% month-on-month.

　　Compared with other new forces, Xpeng Motors’s recent market performance shows signs of falling behind. In November, it sold 5,811 vehicles, of which 1,546 vehicles were delivered by G9, an increase of 148% from the previous month. In order to solve the problem of sales decline, the internal organizational structure and some strategies of the enterprise are also being adjusted.

　　On November 30th, Henry, co-founder and president of Xpeng Motors, officially resigned as executive director of the company and remained as president. Behind this adjustment, the management of the company will focus more on the business and operation of automobile products. He Xiaopeng himself will greatly reduce personal direct participation in eco-enterprises, devote more energy to Tucki’s strategy, product planning and R&D, and promote organizational change and upgrading.

In November, the dealer inventory early warning index rose again.

　　A few days ago, china automobile dealers association released the latest issue of "China Automobile Dealer Inventory Early Warning Index". It shows that in November 2022, the inventory early warning index of automobile dealers in China was 65.3%, up 9.9 percentage points year-on-year and 6.3 percentage points quarter-on-quarter, and the inventory early warning index was above threshold, second only to April this year (66.4%).

　　In addition to the above-mentioned index increase, the inventory index in November also increased month-on-month. However, the index of market demand, average daily sales, employees and operating conditions decreased from the previous month.

　　On May 23rd, the the State Council executive meeting decided to reduce the purchase tax on some passenger cars by 60 billion yuan. According to china automobile dealers association’s estimation, the policy of reducing the purchase tax on some passenger cars has basically reached the expectation, and 40 billion yuan has been implemented as of November 10th. It is estimated that the overall tax reduction will reach 55-65 billion yuan this year. Even with the policy stimulus, china automobile dealers association believes that the sales of fuel vehicles will still decline by 15% in 2022, and the unexpected increase of new energy vehicles will make up for the decline of these fuel vehicles.

Domestic Tesla reproduces large-scale recall

　　On December 1, Tesla (Shanghai) Co., Ltd. recently filed a recall plan with the State Administration of Markets in accordance with the requirements of the Regulations on the Management of Defective Automobile Product Recall and the Implementation Measures for the Regulations on the Management of Defective Automobile Product Recall.

　　According to the information published on the website of the State Administration of Markets, from now on, Tesla will recall some domestic Model 3 electric vehicles with production dates from December 27, 2020 to November 7, 2022, totaling 142,277; A total of 292,855 domestic Model Y electric vehicles with production dates from January 1, 2021 to November 11, 2022 were recalled.　

　　The reason for this recall is that when some vehicles wake up from the parking state, the software of the vehicle position light may make an error when initializing the internal parameters, resulting in that the position light on one or both sides of the rear of the vehicle cannot be lit. In dark environment, the occasional failure of the position light will reduce the visibility of vehicles, and in extreme cases, it will increase the risk of vehicle collision accidents, which has potential safety hazards.

　　According to Tesla’s official statement, the company will upgrade the recalled vehicles to 2022.40 or higher software for free through OTA, and users can complete the software upgrade without going to the store. For vehicles that cannot be recalled through OTA technology, Tesla (Shanghai) Co., Ltd. will contact relevant users through Tesla Service Center to upgrade the software for vehicles free of charge to eliminate potential safety hazards.　

Less than seven years after his resurrection, Baowo went bankrupt again.

　　On November 29th, Beiqi Foton issued an announcement about the court declaring Beijing Baowo Automobile Co., Ltd. bankrupt. At this time, it was only less than seven years since Beijing Baowo was founded.

"Baowo BX7』"

　　Baowo brand was founded in 1919 and was once the third largest automobile manufacturer in Germany. In the 1950s and 1960s, the enterprise was in crisis and finally declared bankruptcy in 1961. In 2014, Beiqi Foton, which is committed to improving its performance in the passenger car field, spent 5 million euros to acquire the Baowo brand, and officially revived it two years later. Since then, Baowo, which focuses on "German technology", has also achieved a short peak in the passenger car market in China, and its first model, Baowo BX7, achieved 5,556 sales results within one natural month.

　　From 2016 to 2018, the cumulative sales volume of Baowo was 106,900 vehicles, and the cumulative loss was as high as 4.014 billion yuan, accounting for 70% of the total loss of Beiqi Foton in the same period. In order to get rid of the burden, Beiqi Futian transferred 67% of the shares of Baowo brand to UCAR at the end of 2018 at a price of 3.973 billion yuan. However, with the lightning storm of the Shenzhou Department in the later period, Baowo once again experienced operational difficulties, and its sales volume gradually declined. I wonder if the Baowo brand will disappear after this bankruptcy, or will it be revived for the third time in the future?

Xiaomi Auto Autopilot R&D blocked?

　　A few days ago, it was reported that the research and development of Xiaomi Auto’s autonomous driving was blocked, and the entire business line was being adjusted. The original full-stack self-research will be temporarily converted into a supplier program. According to people familiar with the matter, the reason for the above changes is that Xiaomi’s autopilot test is not effective. If the company wants to adhere to the plan of mass production of the first car in 2024, it can only be forced to choose a mature solution provided by the supplier.

　　On March 30, 2021, Xiaomi officially announced the construction of the car, and announced the plan to invest 10 billion yuan in the first phase and expect to invest 10 billion US dollars in the next 10 years. The field of autonomous driving is undoubtedly the top priority in this investment plan, and the first phase of R&D investment reached 3.3 billion yuan.

　　In August this year, Xiaomi released a video of intelligent driving test, which successively showed 30 functions such as unprotected left turn, automatic U-turn, multi-lane intersection left turn, roundabout bypass, courtesy to pedestrians and automatic parking, which was ridiculed by some netizens as "each function is worth 100 million". Up to now, Xiaomi official has not responded to the rumor of "suspending full-stack self-research". I wonder how many Xiaomi intelligent driving technologies can be carried in the first production car of Xiaomi mass-produced in 2024? (Text/car home Chen Can)