BENGBU, July 17, 2022 Aerial photo taken on July 16, 2022 shows citizens standing in lines to take nucleic acid tests in Bengshan District of Bengbu City, east China's Anhui Province.. Bengbu in Anhui has started a new round of mass nucleic acid testing from Saturday to Sunday, as the city races against time to contain the latest resurgence of COVID-19 infections. (Credit Image: å© Zhou Mu/Xinhua via ZUMA Press)