Nurse Dai Yuan from the People's Hospital of Qianxinan Bouyei-Miao Autonomous Prefecture is seen before her departure to Wuhan of Hubei Province, in Guiyang, southwest China's Guizhou Province, Jan. 27, 2020. A team comprised of 137 medical workers from Guizhou left for Wuhan on Monday to aid the novel coronavirus control efforts there. (Xinhua/Tao Liang)