(Photo：Xinhua/Xiao Yijiu)

In this combo photo, the upper part shows medical workers escorting recovered COVID-19 patients away at a temporary hospital converted from Hongshan Gymnasium in Wuhan, central China's Hubei Province, March 10, 2020. The temporary hospital was shut down on that day. The lower part shows people attending a job fair for graduates at Hongshan Gymnasium in Wuhan, central China's Hubei Province, Dec. 2, 2020. A national college graduates employment and entrepreneurship promotion fair kicked off here on Wednesday. The Hongshan Gymnasium was converted into a temporary hospital and started operation on Feb. 5. With 784 beds, it received a total of 1,124 patients, and saw 833 patients discharged and 291 patients transferred to other hospitals. Now, It has regained vitality and become the site of many large events.