Li Hao helps his wife to write her name on the protective suit before entering the laboratory of Xiaogan's center for disease control and prevention in central China's Hubei Province, Feb. 14, 2020. As a designated service provider of nucleic acid detection of the novel coronavirus, Xiaogan's center for disease control and prevention can detect about 220 samples every day. Cao Ting and Li Hao, a couple who both work at the center, have fought on the frontline since Jan. 25. (Xinhua/Hu Huhu)
