Ambulance drivers check addresses of the recovered patients with severe novel coronavirus pneumonia (NCP) at the west campus of Wuhan Union Hospital in Wuhan, central China's Hubei Province, Feb. 19, 2020. A total of 31 patients infected with severe NCP recovered and were discharged on Wednesday from the west campus of Wuhan Union Hospital, after receiving medical treatment of nearly two weeks. (Xinhua/Chen Yehua)