People wearing pace masks walk on the street in south China's Hong Kong, Dec. 10, 2020. Hong Kong reported 112 additional confirmed cases of COVID-19 on Thursday, the third day in a row for the figure to surpass 100. (Xinhua/Lo Ping Fai)

Citizens line up to take COVID-19 nucleic acid tests at a testing center in south China's Hong Kong, Dec. 10, 2020. Hong Kong reported 112 additional confirmed cases of COVID-19 on Thursday, the third day in a row for the figure to surpass 100. (Xinhua/Lo Ping Fai)

A citizen takes a COVID-19 nucleic acid test at a testing center in south China's Hong Kong, Dec. 10, 2020. Hong Kong reported 112 additional confirmed cases of COVID-19 on Thursday, the third day in a row for the figure to surpass 100. (Xinhua/Lo Ping Fai)

Photo taken on Dec. 10, 2020 shows a notice on the door of a sports center saying the facilities are temporarily closed due to the COVID-19 pandemic in south China's Hong Kong. Hong Kong reported 112 additional confirmed cases of COVID-19 on Thursday, the third day in a row for the figure to surpass 100. (Xinhua/Lo Ping Fai)