Photo taken with a mobile phone on Feb. 5, 2020 shows a doctor writting the name on the protective suit for Peng Zhiyong (L, front), the director of the intensive care unit, at an isolation ward in Zhongnan Hospital of Wuhan University in Wuhan, central China's Hubei Province. Health workers write names on their protective suits for each other for the sake of recognition in the isolation wards. (Photo by Zhong Nanxuan/Xinhua)