Construction workers receive nucleic acid tests in Daxing District of Beijing

A total of 1,353 workers at the construction site had their samples collected for nucleic acid tests on Thursday. (Photos: Xinhua)

Medical staff members take throat swab samples from construction workers at a temporary sampling site in Daxing District of Beijing, capital of China, July 2, 2020.

Construction workers line up at a temporary sampling site in Daxing District of Beijing, capital of China, July 2, 2020.