Aerial photo taken on April 15, 2022 shows citizens lining up for nucleic acid test at a testing site in Chengxi District of Xining, northwest China's Qinghai Province.
Xining started a new round of nucleic acid test as part of the measures to fight the resurgence of COVID-19. (Xinhua/Fan Peishen)
Citizens line up for nucleic acid test at a residential area in Chengdong District of Xining, northwest China's Qinghai Province, April 15, 2022.
Xining started a new round of nucleic acid test as part of the measures to fight the resurgence of COVID-19. (Xinhua/Wang Bo)
A medical worker helps a citizen register information for nucleic acid test at a testing site in Chengxi District of Xining, northwest China's Qinghai Province, April 15, 2022.
Xining started a new round of nucleic acid test as part of the measures to fight the resurgence of COVID-19. (Xinhua/Fan Peishen)
Aerial photo taken on April 15, 2022 shows citizens lining up for nucleic acid test at a testing site in Chengbei District of Xining, northwest China's Qinghai Province.
Xining started a new round of nucleic acid test as part of the measures to fight the resurgence of COVID-19. (Xinhua/Fan Peishen)
Aerial photo taken on April 15, 2022 shows citizens lining up for nucleic acid test at a testing site in Chengzhong District of Xining, northwest China's Qinghai Province.
Xining started a new round of nucleic acid test as part of the measures to fight the resurgence of COVID-19. (Xinhua/Fan Peishen)
Citizens line up for nucleic acid test at a residential area in Chengdong District of Xining, northwest China's Qinghai Province, April 15, 2022.
Xining started a new round of nucleic acid test as part of the measures to fight the resurgence of COVID-19. (Xinhua/Wang Bo)
A medical worker takes a swab sample from a citizen for nucleic acid test at a testing site in Chengzhong District of Xining, northwest China's Qinghai Province, April 15, 2022.
Xining started a new round of nucleic acid test as part of the measures to fight the resurgence of COVID-19. (Xinhua/Fan Peishen)
A medical worker takes a swab sample from a citizen for nucleic acid test at a testing site in Chengbei District of Xining, northwest China's Qinghai Province, April 15, 2022.
Xining started a new round of nucleic acid test as part of the measures to fight the resurgence of COVID-19. (Xinhua/Fan Peishen)
A medical worker takes a swab sample from a citizen for nucleic acid test at a testing site in Chengxi District of Xining, northwest China's Qinghai Province, April 15, 2022.
Xining started a new round of nucleic acid test as part of the measures to fight the resurgence of COVID-19. (Xinhua/Fan Peishen)