Pu Qiong, an emergency department doctor is seen standing in front of the Third People's Hospital of Tibet, a designated hospital for novel coronavirus in Lhasa, southwest China's Tibet Autonomous Region, February 3，2020. Tibet reported the first confirmed case of novel coronavirus pneumonia on January 28, 2020. [Photo/China News Service]

A medical worker conducts disinfection operations at a designated hospital for novel coronavirus in Lhasa, southwest China's Tibet Autonomous Region, February 3，2020. Tibet reported the first confirmed case of novel coronavirus pneumonia on January 28, 2020. [Photo/China News Service]

A medical worker conducts disinfection operations at a designated hospital for novel coronavirus in Lhasa, southwest China's Tibet Autonomous Region, February 3，2020. Tibet reported the first confirmed case of novel coronavirus pneumonia on January 28, 2020. [Photo/China News Service]

Doctors check the CT report of a confirmed patient of novel coronavirus pneumonia in Lhasa, southwest China's Tibet Autonomous Region. Tibet reported the first confirmed case of novel coronavirus pneumonia on January 28, 2020. [Photo/China News Service]