A cured patient waves goodbye to medical staff through the window of a bus at Huoshenshan (Fire God Mountain) Hospital in Wuhan, central China's Hubei province, Feb. 13, 2020. Huoshenshan Hospital, a makeshift hospital built in Wuhan amid the novel coronavirus pneumonia epidemic, Thursday saw its first seven cured patients. [Photo/Xinhua]

A cured patient waves goodbye to medical staff through the window of a bus at Huoshenshan (Fire God Mountain) Hospital in Wuhan, central China's Hubei province, Feb. 13, 2020. Huoshenshan Hospital, a makeshift hospital built in Wuhan amid the novel coronavirus pneumonia epidemic, Thursday saw its first seven cured patients. [Photo/Xinhua]

Medical staff disinfect an ambulance carrying cured patients at Huoshenshan (Fire God Mountain) Hospital in Wuhan, central China's Hubei province, Feb. 13, 2020. Huoshenshan Hospital, a makeshift hospital built in Wuhan amid the novel coronavirus pneumonia epidemic, Thursday saw its first seven cured patients. [Photo/Xinhua]

Medical staff hold flowers as they wait for cured patients at Huoshenshan (Fire God Mountain) Hospital in Wuhan, central China's Hubei province, Feb. 13, 2020. Huoshenshan Hospital, a makeshift hospital built in Wuhan amid the novel coronavirus pneumonia epidemic, Thursday saw its first seven cured patients. [Photo/Xinhua]

A cured patient thumbs up to medical staff through the window of a bus at Huoshenshan (Fire God Mountain) Hospital in Wuhan, central China's Hubei province, Feb. 13, 2020. Huoshenshan Hospital, a makeshift hospital built in Wuhan amid the novel coronavirus pneumonia epidemic, Thursday saw its first seven cured patients. [Photo/Xinhua]