Dazhou, Sichuan is not the first sunny city in China. Not everyone has COVID-19, but there are still people who are negative and not infected. It is impossible to count whether the whole state of Dazhou is positive. According to the information released by local health and wellness committees, BF.7, BA.2 and BA.2.76 are mainly popular in the north, while BA.5 and BA.5.2 are mainly popular in the south. Strain BF.7 is mainly distributed in Harbin, Beijing, Hohhot, Lanzhou, Zhejiang and other regions, and its symptoms are mainly high fever, persistent cough, body pain and loss of appetite. BA.5.2 strain is mainly distributed in Urumqi, Chongqing, Wuhan, Zhengzhou, Wuhan, Shijiazhuang, Fuzhou, Guangzhou and other regions. The main symptoms are fever and sore throat, and the proportion of asymptomatic infected people is high. Strain BA.2.76 is mainly distributed in Lanzhou.