A medical worker takes a swab sample from a resident at a COVID-19 testing site in Haidian District in Beijing, capital of China, Jan. 24, 2022. (Xinhua/Ren Chao)
Photo taken on Jan. 24, 2022 shows a COVID-19 testing site in Haidian District in Beijing, capital of China. (Xinhua/Ren Chao)
A medical worker takes a swab sample from a resident at a COVID-19 testing site in Haidian District in Beijing, capital of China, Jan. 24, 2022. (Xinhua/Ren Chao)
A community worker registers information for a resident waiting for nucleic acid test at a COVID-19 testing site in Haidian District in Beijing, capital of China, Jan. 24, 2022. (Xinhua/Ren Chao)