At the end of 2019, "new coronavirus pneumonia" broke out in Wuhan, China, and then spread to all parts of China. As of February 29, 2020, a total of 79,394 people were diagnosed in China. The number of people who died of "new coronavirus pneumonia" in China It is 2,838 people; in early 2020, China took unprecedented and extreme measures across the country, including blocking the city of Wuhan to block the spread and transmission of the virus. In early March, China's “new coronavirus pneumonia” entered a moderation