A resident registers for a COVID-19 nucleic acid test at a testing site in Jiangning District of Nanjing, capital city of east China's Jiangsu Province, Aug. 12, 2021. The district has launched a new round of COVID-19 testing since Wednesday. (Xinhua/Ji Chunpeng)
A medical worker takes a swab sample from a woman at a COVID-19 nucleic acid testing site in Jiangning District of Nanjing, capital city of east China's Jiangsu Province, Aug. 12, 2021. The district has launched a new round of COVID-19 testing since Wednesday. (Xinhua/Ji Chunpeng)
A medical worker takes a swab sample from a woman at a COVID-19 nucleic acid testing site in Jiangning District of Nanjing, capital city of east China's Jiangsu Province, Aug. 12, 2021. The district has launched a new round of COVID-19 testing since Wednesday. (Xinhua/Ji Chunpeng)
A medical worker takes a swab sample from a woman at a COVID-19 nucleic acid testing site in Jiangning District of Nanjing, capital city of east China's Jiangsu Province, Aug. 12, 2021. The district has launched a new round of COVID-19 testing since Wednesday. (Xinhua/Ji Chunpeng)
A resident registers for a COVID-19 nucleic acid test at a testing site in Jiangning District of Nanjing, capital city of east China's Jiangsu Province, Aug. 12, 2021. The district has launched a new round of COVID-19 testing since Wednesday. (Xinhua/Ji Chunpeng)
A medical worker takes a swab sample from a child at a COVID-19 nucleic acid testing site in Jiangning District of Nanjing, capital city of east China's Jiangsu Province, Aug. 12, 2021. The district has launched a new round of COVID-19 testing since Wednesday. (Xinhua/Ji Chunpeng)
A medical worker takes a swab sample from a man at a COVID-19 nucleic acid testing site in Jiangning District of Nanjing, capital city of east China's Jiangsu Province, Aug. 12, 2021. The district has launched a new round of COVID-19 testing since Wednesday. (Xinhua/Ji Chunpeng)
A medical worker takes a swab sample from a man at a COVID-19 nucleic acid testing site in Jiangning District of Nanjing, capital city of east China's Jiangsu Province, Aug. 12, 2021. The district has launched a new round of COVID-19 testing since Wednesday. (Xinhua/Ji Chunpeng)
A resident registers for a COVID-19 nucleic acid test at a testing site in Jiangning District of Nanjing, capital city of east China's Jiangsu Province, Aug. 12, 2021. The district has launched a new round of COVID-19 testing since Wednesday. (Xinhua/Ji Chunpeng)
A medical worker shows a drawing by a primary student at a COVID-19 nucleic acid testing site in Jiangning District of Nanjing, capital city of east China's Jiangsu Province, Aug. 12, 2021. The district has launched a new round of COVID-19 testing since Wednesday. (Xinhua/Ji Chunpeng)
A medical worker takes a swab sample from a woman at a COVID-19 nucleic acid testing site in Jiangning District of Nanjing, capital city of east China's Jiangsu Province, Aug. 12, 2021. The district has launched a new round of COVID-19 testing since Wednesday. (Xinhua/Ji Chunpeng)
A resident registers for a COVID-19 nucleic acid test at a testing site in Jiangning District of Nanjing, capital city of east China's Jiangsu Province, Aug. 12, 2021. The district has launched a new round of COVID-19 testing since Wednesday. (Xinhua/Ji Chunpeng)
A community volunteer helps a senior walk to a COVID-19 nucleic acid testing site in Jiangning District of Nanjing, capital city of east China's Jiangsu Province, Aug. 12, 2021. The district has launched a new round of COVID-19 testing since Wednesday. (Xinhua/Ji Chunpeng)
A medical worker takes a swab sample from a woman at a COVID-19 nucleic acid testing site in Jiangning District of Nanjing, capital city of east China's Jiangsu Province, Aug. 12, 2021. The district has launched a new round of COVID-19 testing since Wednesday. (Xinhua/Ji Chunpeng)
