Li Hua has a video chat with his family at his dormitory after work in Wuhan, central China's Hubei Province, March 7, 2020. Li Hua, 44, is a ambulance driver of Zhongnan Hospital of Wuhan University. After Zhongnan Hospital took over the Leishenshan Hospital a month ago, Li started shuttling COVID-19 patients between the two hospitals. During the busiest days, Li Hua worked night and day, transferring over 100 patients each day. (Xinhua/Li He)

A patient (3rd L) prepares to get on Li Hua's ambulance to go to Zhongnan Hospital of Wuhan University for medical examination at Leishenshan Hospital in Wuhan, central China's Hubei Province, March 7, 2020. Li Hua, 44, is a ambulance driver of Zhongnan Hospital of Wuhan University. After Zhongnan Hospital took over the Leishenshan Hospital a month ago, Li started shuttling COVID-19 patients between the two hospitals. During the busiest days, Li Hua worked night and day, transferring over 100 patients each day. (Xinhua/Li He)

Li Hua sterilizes his ambulance after work in Wuhan, central China's Hubei Province, March 7, 2020. Li Hua, 44, is a ambulance driver of Zhongnan Hospital of Wuhan University. After Zhongnan Hospital took over the Leishenshan Hospital a month ago, Li started shuttling COVID-19 patients between the two hospitals. During the busiest days, Li Hua worked night and day, transferring over 100 patients each day. (Xinhua/Li He)

Photo taken on March 7, 2020 shows the protrait of Li Hua in Wuhan, central China's Hubei Province. Li Hua, 44, is a ambulance driver of Zhongnan Hospital of Wuhan University. After Zhongnan Hospital took over the Leishenshan Hospital a month ago, Li started shuttling COVID-19 patients between the two hospitals. During the busiest days, Li Hua worked night and day, transferring over 100 patients each day. (Xinhua/Li He)

Li Hua returns to his dormitory after work in Wuhan, central China's Hubei Province, March 7, 2020. Li Hua, 44, is a ambulance driver of Zhongnan Hospital of Wuhan University. After Zhongnan Hospital took over the Leishenshan Hospital a month ago, Li started shuttling COVID-19 patients between the two hospitals. During the busiest days, Li Hua worked night and day, transferring over 100 patients each day. (Xinhua/Li He)

Li Hua (L) and his colleague put on protection suits at Leishenshan Hospital in Wuhan, central China's Hubei Province, March 7, 2020. Li Hua, 44, is a ambulance driver of Zhongnan Hospital of Wuhan University. After Zhongnan Hospital took over the Leishenshan Hospital a month ago, Li started shuttling COVID-19 patients between the two hospitals. During the busiest days, Li Hua worked night and day, transferring over 100 patients each day. (Xinhua/Li He)

Li Hua (L) and his colleague wait outside while the patient they transferred takes medical examination at Zhongnan Hospital of Wuhan University in Wuhan, central China's Hubei Province, March 7, 2020. Li Hua, 44, is a ambulance driver of Zhongnan Hospital of Wuhan University. After Zhongnan Hospital took over the Leishenshan Hospital a month ago, Li started shuttling COVID-19 patients between the two hospitals. During the busiest days, Li Hua worked night and day, transferring over 100 patients each day. (Xinhua/Li He)

Li Hua rests at his dormitory after work in Wuhan, central China's Hubei Province, March 7, 2020. Li Hua, 44, is a ambulance driver of Zhongnan Hospital of Wuhan University. After Zhongnan Hospital took over the Leishenshan Hospital a month ago, Li started shuttling COVID-19 patients between the two hospitals. During the busiest days, Li Hua worked night and day, transferring over 100 patients each day. (Xinhua/Li He)

Li Hua transfers a COVID-19 patient to Zhongnan Hospital of Wuhan University for medical examination in Wuhan, central China's Hubei Province, March 7, 2020. Li Hua, 44, is a ambulance driver of Zhongnan Hospital of Wuhan University. After Zhongnan Hospital took over the Leishenshan Hospital a month ago, Li started shuttling COVID-19 patients between the two hospitals. During the busiest days, Li Hua worked night and day, transferring over 100 patients each day. (Xinhua/Li He)

Li Hua (R) and his colleague carry a wheel chair into the ambulance after receiving a patient in Wuhan, central China's Hubei Province, March 7, 2020. Li Hua, 44, is a ambulance driver of Zhongnan Hospital of Wuhan University. After Zhongnan Hospital took over the Leishenshan Hospital a month ago, Li started shuttling COVID-19 patients between the two hospitals. During the busiest days, Li Hua worked night and day, transferring over 100 patients each day. (Xinhua/Li He)