the peak of epidemic situation in Zhaoqing, Guangdong province is 1. According to the relevant information query, the epidemic dynamics announced by Zhaoqing Municipal People's Government of Guangdong Province set the peak of the epidemic on the 1 th. On that day, the crowds in major shopping malls and supermarkets were huge. After opening, they could enter the supermarket without nucleic acid certificate, which increased the risk of transmission.