Medical workers work in an air-inflated testing lab in Chengdu, southwest China's Sichuan Province, Sept. 5, 2022. The city of Chengdu has built five air-inflated laboratories for COVID-19 nucleic acid testing, providing a daily maximum testing capacity of 250,000 tubes.(Photo: Xinhua)
Medical workers handle nucleic acid samples in an air-inflated testing lab in Chengdu, southwest China's Sichuan Province, Sept. 4, 2022. The city of Chengdu has built five air-inflated laboratories for COVID-19 nucleic acid testing, providing a daily maximum testing capacity of 250,000 tubes.(Photo: Xinhua)
A medical worker works in an air-inflated testing lab in Chengdu, southwest China's Sichuan Province, Sept. 5, 2022. The city of Chengdu has built five air-inflated laboratories for COVID-19 nucleic acid testing, providing a daily maximum testing capacity of 250,000 tubes.(Photo: Xinhua)
Medical workers from the city of Luzhou in southwest China's Sichuan Province arrive to assist in COVID-19 nucleic acid testing in the provincial capital Chengdu on Sept. 2, 2022. The city of Chengdu has built five air-inflated laboratories for COVID-19 nucleic acid testing, providing a daily maximum testing capacity of 250,000 tubes.(Photo: Xinhua)