Mu Zhen (1st R), a medical team member from Xi'an International Medical Center Hospital, says goodbye to her colleagues before setting off for Wuhan in Hubei Province, in Xi'an, northwest China's Shaanxi Province, Feb. 3, 2020. A medical team comprised of 212 members from Xi'an International Medical Center Hospital set off on Monday to aid the coronavirus control efforts in Wuhan. (Xinhua/Zhang Bowen)