Recovered COVID-19 patients express their gratitude to medical staff of the Second Xiangya Hospital of Central South University, at the Zhongfaxincheng campus of Tongji Hospital affiliated to Huazhong University of Science and Technology in Wuhan, central China's Hubei Province, Feb. 23, 2020. Among the COVID-19 patients admitted by the Second Xiangya Hospital of Central South University from Hunan Province, the first batch of 11 patients with severe symptoms were discharged from the Zhongfaxincheng campus of Tongji Hospital affiliated to Huazhong University of Science and Technology in Wuhan, with the eldest 82 and the youngest 38 years old. (Xinhua/Shen Bohan)