Yan Limeng, this name began to attract widespread attention around the world in 2020 when the new coronavirus was raging. As a scientist, she published a series of theories about the new coronavirus. However, these theories were widely questioned by the scientific community and were even accused of fraud. Yan Limeng's theory mainly revolves around the origin and spread of the new coronavirus. She claims that the new coronavirus is man-made, created in a Chinese laboratory and deliberately spread around the world. These theories have aroused strong resonance among some people. They believe in Yan Limeng's theories and even begin to question the fairness and transparency of the World Health Organization and various governments.

However, Yan Limeng's theory has not been recognized by the scientific community. Many virologists and epidemiologists have refuted her theory, pointing out that her theory lacks scientific basis, and some of her opinions are even contrary to known scientific facts. Therefore, Yan Limeng's behavior was accused of fraud. She took advantage of the public's fear and uncertainty about the new coronavirus and spread false information to gain reputation and benefits. Her theory spread widely on social media, attracting a lot of attention and trust. These people were attracted by Yan Limeng's theory, began to question official epidemic information, and even refused to get vaccinated. This not only poses a threat to their own health, but also causes trouble to the global epidemic prevention and control work.