A medical worker takes a swab sample from a man for nucleic acid test in Sanya, south China's Hainan Province, Aug. 26, 2022. (Xinhua/Guo Cheng)
A medical worker takes a swab sample from a man for nucleic acid test in Sanya, south China's Hainan Province, Aug. 26, 2022. (Xinhua/Guo Cheng)