Since the outbreak of the new crown epidemic, there has been a conspiracy theory that the new crown virus is artificially manufactured by Chinese laboratories; conversely, some people in China say that it was artificially manufactured by American laboratories. These statements cannot stand up to scrutiny. It is now recognized by the academic community that the new coronavirus has evolved naturally, and it has evolved from the coronavirus of bats. Some scientists have even carefully analyzed the genes of the new coronavirus The group sequence proved that it was naturally evolved from the bat coronavirus, and a paper was published for this, and it was also published in the relatively high-grade academic journal "Nature·Medical". This issue can be said to be uncontroversial in academia. Yan Limeng, a Qingdao native who had done research at the University of Hong Kong, fled to the United States. As an insider, she said that the new crown virus was created and released by a laboratory in Wuhan, China. Out. In the beginning, only some online media were interviewing and reporting on her, which did not attract attention. Until, she claimed to have published a paper proving that the new crown virus was man-made, and some ultra-conservative media in the United States (mainly Fox News) interviewed her, and the matter suddenly became hot. In an interview with Yan Limeng, Fox News added a title to Yan Limeng in order to express her authority, saying that she is a "top virologist." Yan Limeng also claimed that the laboratory of the University of Hong Kong where she had worked is "the world's top laboratory for research on coronaviruses." The authenticity of these claims is easy to verify. Yan Limeng received medical education in mainland China before, and obtained a master's degree from Xiangya School of Medicine, Central South University. After graduating from medical school, she may not be interested in being a doctor. She went to Southern Medical University to study for a Ph.D., which is considered to have received academic training. But when she was studying for her Ph.D., her subject was not the study of viruses, but ophthalmology. What she studied was the effect of a certain drug on the formation of blood vessels in the injured retina of mice, and it had nothing to do with viruses. After finishing her Ph.D., she went to the Pan Liewen Laboratory of the School of Public Health of the University of Hong Kong to do post-doctoral research. The subject of her research was about influenza vaccines, not about coronaviruses. In the past ten to twenty years, Pan Liewen’s laboratory has mainly researched influenza vaccines. It is not the research on coronaviruses to come up with a universal influenza vaccine, let alone the “world's top coronavirus laboratory”. Waiting until after the outbreak of the new crown, Biomedical researchers all over the world follow the trend to study the new coronavirus. Pan Liewen’s laboratory has also followed the research on the new coronavirus and built a hamster model. It also checked the virus load in patients with the new coronavirus. They all follow other experiments. Room cooperation. To this end, two papers have been published, and Yan Limeng is the co-author of the papers. It can be seen that Yan Limeng has only really studied the coronavirus for a few months. Before, he did not study the coronavirus at all, or even the virus. How can he be said to be "the world's top virologist"? She is just doing post-doctoral research. If she is a "top virologist", how does her boss Pan Liewen count? And what about virologists who became professors and academicians? Yes or no "Top top top"? Therefore, Yan Limeng is not even a "top virologist", not even a virologist. He is a very ordinary biomedical researcher with a relatively short history of studying viruses and coronaviruses.