China Unicom's engineer Long Jiaxin coordinates 5G-related issues at the command center of a temporary hospital in Guanggu area of Wuhan, central China's Hubei Province, March 4, 2020. China Unicom is making full use of its "5G+Cloud+Network" information and communication technology advantages to help Wuhan in its fight against the novel coronavirus. (Xinhua/Xiao Yijiu)