A staff member works in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

A staff member works in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

Staff members put on protective suits in the locker room before entering a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

Staff members work in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

A staff member works in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

A staff member works in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

Staff members work in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

A staff member works in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

A staff member works in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

Staff members work in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

A staff member works in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

A staff member works in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

A staff member works in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

Aerial photo shows "Falcon" air-inflated laboratories for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

A staff member works in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

A staff member works in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

A staff member works in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

Aerial photo shows "Falcon" air-inflated laboratories for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)

A staff member works in a "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing in Dalian, northeast China's Liaoning Province, Nov. 24, 2021. The "Falcon" air-inflated laboratory for COVID-19 nucleic acid testing entered operation on Nov. 11 in Dalian. Besides Dalian, the "Falcon" lab has assisted Guangzhou, Nanjing, Yangzhou, Xiamen, Harbin and other cities in greatly improving their testing capacity in a short period of time. (Xinhua/Yao Jianfeng)