Residents line up for COVID-19 test at a testing site in Xiamen, southeast China's Fujian Province, Aug. 2, 2021. A new round of COVID-19 nucleic acid test has been launched after the first round of test in key areas in Xiamen. (Photo by Zeng Demeng/Xinhua)
A medical worker takes a swab sample from a resident for COVID-19 test at a testing site in Xiamen, southeast China's Fujian Province, Aug. 2, 2021. A new round of COVID-19 nucleic acid test has been launched after the first round of test in key areas in Xiamen. (Photo by Zeng Demeng/Xinhua)
