A staff member sprays disinfectant inside a residential building in Haidian District in Beijing, capital of China, Jan. 29, 2020. Haidian District of Beijing has carried out disinfection work with the help of professional staff at residential communities to curb the spread of the novel coronavirus. (Xinhua/Ren Chao)

A staff member disinfects garbage bins at a community in Haidian District in Beijing, capital of China, Jan. 29, 2020. Haidian District of Beijing has carried out disinfection work with the help of professional staff at residential communities to curb the spread of the novel coronavirus. (Xinhua/Ren Chao)

A staff member disinfects corridor at a community in Haidian District in Beijing, capital of China, Jan. 29, 2020. Haidian District of Beijing has carried out disinfection work with the help of professional staff at residential communities to curb the spread of the novel coronavirus. (Xinhua/Ren Chao)

A staff member disinfects public seats at a community in Haidian District in Beijing, capital of China, Jan. 29, 2020. Haidian District of Beijing has carried out disinfection work with the help of professional staff at residential communities to curb the spread of the novel coronavirus. (Xinhua/Ren Chao)