On March 6th, 2022, COVID-19 outbreak broke out in Shanghai. The epidemic first started at Hua Ting Hotel, Caoxi North Road 1200, which is a centralized isolation point for entry personnel. During routine screening of staff, it was found that COVID-19's nucleic acid test results were abnormal, and then it was isolated and controlled.

On March 10, there were 64 new confirmed cases1case and asymptomatic infection cases in Shanghai.

From 00: 00 to 24: 00 on March 27th, 2022, there were 50 new confirmed cases in COVID-19, with 2833 asymptomatic infected people.

On March 28th, 2022 -4. 1, Shanghai Pudong New Area was closed, and on April 28th, 2022-KLOC-0/,Puxi began to be closed. It was not unsealed until June 2022 1 Shanghai.