Zhang Weihua, a medical worker from the First Affiliated Hospital of Chongqing Medical University, waves goodbye to her husband at Chongqing Jiangbei International Airport in southwest China's Chongqing, Jan. 26, 2020. A team comprised of more than 130 medical workers from Chongqing left for Xiaogan City of Hubei Province on Sunday to aid the novel coronavirus control efforts there. (Xinhua/Wang Quanchao)