Tung Chee-hwa (4th R), vice chairman of the National Committee of the Chinese People's Political Consultative Conference, and Hong Kong's Chief Executive Leung Chun-ying (3rd R) mourn victims of the Nanjing Massacre at a ceremony for China's National Memorial Day for Nanjing Massacre Victims in Hong Kong, south China, Dec. 13, 2016. (Xinhua/Wang Shen)
