Wu dong, a physician of gastroenterology from Peking Union Medical College Hospital, speaks at a press conference held by the State Council Information Office in Wuhan, central China's Hubei Province, March 16, 2020. Experts from Peking Union Medical College Hospital who fight against novel coronavirus disease (COVID-19) at the front line met the press via a video press conference, introducing treatment of the COVID-19. (Xinhua/Xiao Yijiu)