A medical worker (L) takes a swab sample from a resident in Xingqing District of Yinchuan, northwest China's Ningxia Hui Autonomous Region, Nov. 2, 2021. A third round of nucleic acid test has been launched from 8 a.m. Tuesday in Yinchuan. As of Sunday, a total of 33 confirmed COVID-19 cases have been reported in Ningxia, with 21 cases in Yinchuan, the capital city. (Xinhua/Feng Kaihua)
A medical worker (R) scans a resident's health code to register information at a residential area in Xingqing District of Yinchuan, northwest China's Ningxia Hui Autonomous Region, Nov. 2, 2021. A third round of nucleic acid test has been launched from 8 a.m. Tuesday in Yinchuan. As of Sunday, a total of 33 confirmed COVID-19 cases have been reported in Ningxia, with 21 cases in Yinchuan, the capital city. (Xinhua/Feng Kaihua)
A medical worker takes a swab sample from a resident at a residential area in Xingqing District of Yinchuan, northwest China's Ningxia Hui Autonomous Region, Nov. 2, 2021. A third round of nucleic acid test has been launched from 8 a.m. Tuesday in Yinchuan. As of Sunday, a total of 33 confirmed COVID-19 cases have been reported in Ningxia, with 21 cases in Yinchuan, the capital city. (Xinhua/Feng Kaihua)
A medical worker takes a swab sample from a resident at a residential area in Xingqing District of Yinchuan, northwest China's Ningxia Hui Autonomous Region, Nov. 2, 2021. A third round of nucleic acid test has been launched from 8 a.m. Tuesday in Yinchuan. As of Sunday, a total of 33 confirmed COVID-19 cases have been reported in Ningxia, with 21 cases in Yinchuan, the capital city. (Xinhua/Feng Kaihua)
A medical worker takes a swab sample from a citizen in Xingqing District of Yinchuan, northwest China's Ningxia Hui Autonomous Region, Nov. 2, 2021. A third round of nucleic acid test has been launched from 8 a.m. Tuesday in Yinchuan. As of Sunday, a total of 33 confirmed COVID-19 cases have been reported in Ningxia, with 21 cases in Yinchuan, the capital city. (Xinhua/Wang Peng)
Aerial photo taken on Nov. 2, 2021 shows citizens lining up for nucleic acid test in Xingqing District of Yinchuan, northwest China's Ningxia Hui Autonomous Region. A third round of nucleic acid test has been launched from 8 a.m. Tuesday in Yinchuan. As of Sunday, a total of 33 confirmed COVID-19 cases have been reported in Ningxia, with 21 cases in Yinchuan, the capital city. (Xinhua/Wang Peng)
A medical worker takes a swab sample from a resident at a residential area in Jinfeng District of Yinchuan, northwest China's Ningxia Hui Autonomous Region, Nov. 2, 2021. A third round of nucleic acid test has been launched from 8 a.m. Tuesday in Yinchuan. As of Sunday, a total of 33 confirmed COVID-19 cases have been reported in Ningxia, with 21 cases in Yinchuan, the capital city. (Xinhua/Feng Kaihua)
A medical worker scans a resident's health code to register information at a residential area in Jinfeng District of Yinchuan, northwest China's Ningxia Hui Autonomous Region, Nov. 2, 2021. A third round of nucleic acid test has been launched from 8 a.m. Tuesday in Yinchuan. As of Sunday, a total of 33 confirmed COVID-19 cases have been reported in Ningxia, with 21 cases in Yinchuan, the capital city. (Xinhua/Feng Kaihua)
Medical workers put a swab sample into a tube at a testing site in Xingqing District of Yinchuan, northwest China's Ningxia Hui Autonomous Region, Nov. 2, 2021. A third round of nucleic acid test has been launched from 8 a.m. Tuesday in Yinchuan. As of Sunday, a total of 33 confirmed COVID-19 cases have been reported in Ningxia, with 21 cases in Yinchuan, the capital city. (Xinhua/Feng Kaihua)
Medical workers take swab samples from citizens at a residential area in Xingqing District of Yinchuan, northwest China's Ningxia Hui Autonomous Region, Nov. 2, 2021. A third round of nucleic acid test has been launched from 8 a.m. Tuesday in Yinchuan. As of Sunday, a total of 33 confirmed COVID-19 cases have been reported in Ningxia, with 21 cases in Yinchuan, the capital city. (Xinhua/Wang Peng)
