Pedestrians walk past a sign reminding people of wearing face masks and keeping social distancing on Lee Tung Avenue in Hong Kong, south China, Dec. 21, 2020. Hong Kong's Center for Health Protection (CHP) reported 85 new confirmed cases of COVID-19 on Monday, taking its total tally to 8,237. (Photos: Xinhua)

Photo taken on Dec. 21, 2020 shows a sign reminding people of wearing face masks and keeping social distancing on Lee Tung Avenue in Hong Kong, south China. Hong Kong's Center for Health Protection (CHP) reported 85 new confirmed cases of COVID-19 on Monday, taking its total tally to 8,237.

Pedestrians walk past a sign reminding people of keeping social distancing on Lee Tung Avenue in Hong Kong, south China, Dec. 21, 2020. Hong Kong's Center for Health Protection (CHP) reported 85 new confirmed cases of COVID-19 on Monday, taking its total tally to 8,237.