![](20211015C99FC9848040000146EA1D0013E29B00_1310265678_1635074997459.jpg)
Aerial photo shows citizens queuing up to receive nucleic acid test at a testing site in Chengguan District of Lanzhou, northwest China's Gansu Province, Oct. 24, 2021. The Chengguan and Qilihe districts in Lanzhou have launched a second round of all-inclusive nucleic acid testing Sunday since new local COVID-19 infections were reported. (Xinhua/Fan Peishen)
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A child receives a nucleic acid test at a testing site in Chengguan District of Lanzhou, northwest China's Gansu Province, Oct. 24, 2021. The Chengguan and Qilihe districts in Lanzhou have launched a second round of all-inclusive nucleic acid testing Sunday since new local COVID-19 infections were reported. (Xinhua/Fan Peishen)
![](\pageflag.gif)
Aerial photo shows citizens queuing up to receive nucleic acid test at a testing site in Chengguan District of Lanzhou, northwest China's Gansu Province, Oct. 24, 2021. The Chengguan and Qilihe districts in Lanzhou have launched a second round of all-inclusive nucleic acid testing Sunday since new local COVID-19 infections were reported. (Xinhua/Fan Peishen)
![](\pageflag.gif)
Citizens queue up to receive nucleic acid test at a testing site in Chengguan District of Lanzhou, northwest China's Gansu Province, Oct. 24, 2021. The Chengguan and Qilihe districts in Lanzhou have launched a second round of all-inclusive nucleic acid testing Sunday since new local COVID-19 infections were reported. (Xinhua/Fan Peishen)
![](\pageflag.gif)
Citizens queue up to receive nucleic acid test at a testing site in Chengguan District of Lanzhou, northwest China's Gansu Province, Oct. 24, 2021. The Chengguan and Qilihe districts in Lanzhou have launched a second round of all-inclusive nucleic acid testing Sunday since new local COVID-19 infections were reported. (Xinhua/Fan Peishen)
![](\pageflag.gif)
Aerial photo shows citizens queuing up to receive nucleic acid test at a testing site in Chengguan District of Lanzhou, northwest China's Gansu Province, Oct. 24, 2021. The Chengguan and Qilihe districts in Lanzhou have launched a second round of all-inclusive nucleic acid testing Sunday since new local COVID-19 infections were reported. (Xinhua/Fan Peishen)
![](\pageflag.gif)
Aerial photo shows citizens queuing up to receive nucleic acid test at a testing site in Chengguan District of Lanzhou, northwest China's Gansu Province, Oct. 24, 2021. The Chengguan and Qilihe districts in Lanzhou have launched a second round of all-inclusive nucleic acid testing Sunday since new local COVID-19 infections were reported. (Xinhua/Fan Peishen)