Photo taken on Nov. 5, 2021 shows a mobile laboratory for nucleic acid tests in Harbin, northeast China's Heilongjiang Province. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Wang Jianwei)
Photo taken on Nov. 5, 2021 shows a mobile laboratory for nucleic acid tests in Harbin, northeast China's Heilongjiang Province. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Zhang Tao)
Medical workers work at a mobile laboratory for nucleic acid tests in Harbin, northeast China's Heilongjiang Province, Nov. 5, 2021. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Wang Jianwei)
Photo taken on Nov. 5, 2021 shows a mobile laboratory for nucleic acid tests in Harbin, northeast China's Heilongjiang Province. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Wang Jianwei)
A medical worker talks with a colleague inside an air-inflated film chamber of a mobile laboratory for nucleic acid test in Harbin, northeast China's Heilongjiang Province, Nov. 5, 2021. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Wang Jianwei)
Photo taken on Nov. 5, 2021 show air-inflated film chambers of a mobile laboratory for nucleic acid test in Harbin, northeast China's Heilongjiang Province. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Zhang Tao)
A medical worker works at a mobile laboratory for nucleic acid test in Harbin, northeast China's Heilongjiang Province, Nov. 5, 2021. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Zhang Tao)
Photo taken on Nov. 5, 2021 show air-inflated film chambers of a mobile laboratory for nucleic acid test in Harbin, northeast China's Heilongjiang Province. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Wang Jianwei)
Medical workers work inside an air-inflated film chamber of a mobile laboratory for nucleic acid test in Harbin, northeast China's Heilongjiang Province, Nov. 5, 2021. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Wang Jianwei)
A medical worker disinfects hands inside an air-inflated film chamber of a mobile laboratory for nucleic acid test in Harbin, northeast China's Heilongjiang Province, Nov. 5, 2021. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Wang Jianwei)
Medical workers work at a mobile laboratory for nucleic acid test in Harbin, northeast China's Heilongjiang Province, Nov. 5, 2021. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Zhang Tao)
A medical worker works inside an air-inflated film chamber of a mobile laboratory for nucleic acid test in Harbin, northeast China's Heilongjiang Province, Nov. 5, 2021. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Wang Jianwei)
Medical workers who finished their daily work pose for a photo before leaving a mobile laboratory for nucleic acid test in Harbin, northeast China's Heilongjiang Province, Nov. 5, 2021. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Zhang Tao)
Medical workers work inside an air-inflated film chamber of a mobile laboratory for nucleic acid test in Harbin, northeast China's Heilongjiang Province, Nov. 5, 2021. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Wang Jianwei)
Medical workers work at a mobile laboratory for nucleic acid test in Harbin, northeast China's Heilongjiang Province, Nov. 5, 2021. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Zhang Tao)
A medical worker disinfects medical waste at a mobile laboratory for nucleic acid test in Harbin, northeast China's Heilongjiang Province, Nov. 4, 2021. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Wang Jianwei)
Vehicles delivering swab samples for nucleic acid test are seen in Harbin, northeast China's Heilongjiang Province, Nov. 5, 2021. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Wang Jianwei)
A medical worker works inside an air-inflated film chamber of a mobile laboratory for nucleic acid test in Harbin, northeast China's Heilongjiang Province, Nov. 5, 2021. A mobile, inflatable laboratory for conducting COVID-19 tests was officially put into use on Nov. 1 at a sports center in Harbin. The laboratory can cope with swab samples from 1.75 million people for nucleic acid tests per day. (Xinhua/Wang Jianwei)