Recovered COVID-19 patients do baduanjin (a fitness practice with a history of 800 years) at Wuhan Vocational College of Software and Engineering, which has been used as a quarantine site in Wuhan, Hubei province, on March 12, 2020. [Photo by Zhu Xingxin/chinadaily.com.cn]

Recovered COVID-19 patients pose with a medical worker at the Wuhan Vocational College of Software and Engineering, which has been used as a quarantine site in Wuhan, Hubei province, on March 12, 2020. Over 700 COVID-19 patients placed here for further medical observation after being cured will be discharged on Friday. [Photo by Zhu Xingxin/chinadaily.com.cn]