Residents queue for nucleic acid tests at a residential area in Xiqing District, north China’s Tianjin, May 21, 2022. Mass nucleic acid tests have been launched at 8 p.m. Friday in Tianjin’s Nankai, Hongqiao, Hexi, Hedong and Heping districts in face of the recent COVID-19 outbreak. Other districts in the municipality carried out mass nucleic acid tests on Saturday. (Xinhua/Li Ran)
The Chinese mainland on Saturday reported 157 locally-transmitted confirmed COVID-19 cases, of which Shanghai and Beijing both reported 52, according to the National Health Commission Sunday.
原文地址：http://en.people.cn/n3/2022/0522/c90000-10099732.html