It was just a made-up gimmick. Here Yan Limeng met many compatriots from China. They all came to the United States to avoid legal sanctions because they did illegal things in China. Now they have all accepted the brainwashing of the anti-China camp. The leader of the anti-China camp began to seduce Yan Limeng with various benefits, and finally Yan Limeng joined them driven by greed.
After becoming their lackey, Yan Limeng began to use her "expertise" to use those forged medical papers to package herself as a doctor of medicine, and claimed that she had the truth about the new coronavirus epidemic