Head nurse Sun Chun is seen at an ICU ward of the First Hospital of Wuhan City in Wuhan, central China's Hubei Province, Feb. 22, 2020. Sun Chun is among the first batch of medical workers dispatched from the First Hospital to the makeshift hospital of Leishenshan (Thunder God Mountain) in Wuhan, the epicenter of the novel coronavirus outbreak. After finishing the work at Leishenshan, she returned to the First Hospital and remained in the frontline of fighting against the virus. (Xinhua/Xiao Yijiu)

Head nurse Sun Chun (R) works with a colleague at an ICU ward of the First Hospital of Wuhan City in Wuhan, central China's Hubei Province, Feb. 22, 2020. (Xinhua/Xiao Yijiu)

Head nurse Sun Chun (L) writes the name of her colleague Li Yunmo on her protective suit at the First Hospital of Wuhan City in Wuhan, central China's Hubei Province, Feb. 22, 2020. (Xinhua/Xiao Yijiu)

Head nurse Sun Chun arranges tasks by cellphone at the First Hospital of Wuhan City in Wuhan, central China's Hubei Province, Feb. 22, 2020. (Xinhua/Xiao Yijiu)

Head nurse Sun Chun disinfects hands before working at an ICU ward of the First Hospital of Wuhan City in Wuhan, central China's Hubei Province, Feb. 22, 2020. (Xinhua/Xiao Yijiu)

Head nurse Sun Chun (1st L) takes care of a COVID-19 patient at an ICU ward of the First Hospital of Wuhan City in Wuhan, central China's Hubei Province, Feb. 22, 2020. (Xinhua/Xiao Yijiu)

Head nurse Sun Chun (R) looks at doctor's advice on COVID-19 patients at an ICU ward of the First Hospital of Wuhan City in Wuhan, central China's Hubei Province, Feb. 22, 2020. (Xinhua/Xiao Yijiu)