Reporter: Before the Spring Festival, many people were worried that there would be a second peak of the epidemic due to the large-scale movement of people during the Spring Festival, but in fact it did not come. Why? Li Tongzeng: This is mainly because we have been infected with the new crown virus in the past month or so, from December to early January. After just being infected, everyone recovered, our immune system defeated the virus, and the antibody level was relatively high during this period, so although there were a lot of people moving around during the Spring Festival and everyone attended many parties, due to our current virus There has not been much mutation, so we have not seen a new peak of the epidemic. From the current point of view, it has passed this period of time smoothly.