Gu Yunchuan (center), the first severe COVID-19 patient to successfully receive a kidney transplant, takes photos with the medical workers at the Renmin Hospital of Wuhan University in Wuhan, Hubei province. [Photo/Wuhan University]

Gu Yunchuan receives kidney transplant surgery at the Renmin Hospital of Wuhan University in Wuhan, Hubei province, on May 3, 2020. [Photo/Wuhan University]

Doctors check Gu's condition after the kidney transplant surgery at the Renmin Hospital of Wuhan University in Wuhan, Hubei province. [Photo/Wuhan University]