When night falls, shift workers in Wuhan, Hubei province, take part in efforts to control the novel coronavirus pneumonia outbreak. Photographer Chen Liang reports from Wuhan.

Wang Ke, a first-aid medical worker, helps to pull a patient out of an ambulance, on Feb 18, 2020. (CHEN LIANG / FOR CHINA DAILY)

Chen Lei is an operator for the first aid hotline on Feb 18, 2020. She said she's had to work for 12 straight hours from 8 am every day since the COVID-19 outbreak. (CHEN LIANG / FOR CHINA DAILY)

Lv Mengting arranges racks at a 24/7 convenience store on Feb 15, 2020. (CHEN LIANG / FOR CHINA DAILY)

Liu Sheng, a traffic police officer, tests body temperature of a driver on Feb 14, 2020. (CHEN LIANG / FOR CHINA DAILY)

Nie Heping, a sanitation worker, spreads disinfection fluid onto a road on Feb 16, 2020. (CHEN LIANG / FOR CHINA DAILY)

Sanitation workers spread salt to prevent snow on the road from freezing on Feb 16, 2020. (CHEN LIANG / FOR CHINA DAILY)

Hotel Manager Liu Lei cleans the public area at the Pod Inn, a hotel that hosts medical workers on Feb 16, 2020. (CHEN LIANG / FOR CHINA DAILY)

Zhang Cheng, a courier, is on his way to deliver takeout food on Feb 13, 2020. (CHEN LIANG / FOR CHINA DAILY)

Liu Lang, a deliveryman for Meicai.com, an online grocery store, picks up food for customers on Feb 21, 2020. (CHEN LIANG / FOR CHINA DAILY)

Liu Yong, a community security worker, is on duty on Feb 14, 2020. (CHEN LIANG / FOR CHINA DAILY)

Wang Hua sorts vegetables at a grocery store on Feb 21, 2020. (CHEN LIANG / FOR CHINA DAILY)

Hu Jianbin, a driver at the ride-hailing company Didi Chuxing, transports medical workers on Feb 14, 2020. (CHEN LIANG / FOR CHINA DAILY)

Catering workers at the Lihua Hotel prepare breakfast for medical workers on Feb 15, 2020. (CHEN LIANG / FOR CHINA DAILY)