Aerial photo taken on Feb. 13, 2022 shows mobile cabin PCR (polymerase chain reaction) laboratories in Debao County of Baise, south China's Guangxi Zhuang Autonomous Region. In recent days, mobile laboratories and air-inflated laboratories have been put into use in order to improve the efficiency of COVID-19 nucleic acid testing in Debao County. [Photo by Cao Yiming/Xinhua]
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