A medical worker takes a swab sample from a citizen for nucleic acid testing at Heping District in Tianjin, north China, July 24, 2022. (Xinhua/Sun Fanyue)
Citizens queue up to take nucleic acid tests at Hebei District in Tianjin, north China, July 24, 2022. (Xinhua/Sun Fanyue)
Citizens register for nucleic acid testing at Heping District in Tianjin, north China, July 24, 2022. (Xinhua/Sun Fanyue)
A medical worker takes a swab sample from a citizen for nucleic acid testing at Heping District in Tianjin, north China, July 24, 2022. (Xinhua/Sun Fanyue)
A medical worker takes a swab sample from a citizen for nucleic acid testing at Heping District in Tianjin, north China, July 24, 2022. (Xinhua/Sun Fanyue)
