Passengers wearing face masks to protect themselves against the coronavirus walk along a concourse at Haikou Meilan International Airport in Haikou in southern China's Hainan Province, Tuesday, Nov. 24, 2020. China reported one new coronavirus case in a worker at Shanghai's Pudong Airport on Tuesday as it is mass testing thousands of airport employees in an effort to contain a COVID-19 outbreak centered around workers at Pudong. (AP Photo/Mark Schiefelbein), APTOPIX