A visitor views a photo exhibition marking the 71st anniversary of the Tokyo Trial's judgment and sentence of Japanese war criminals during World War II at the Memorial Hall of the Victims in Nanjing Massacre by Japanese Invaders in Nanjing, east China's Jiangsu Province, Sept. 18, 2019. The photo exhibition opened here on Wednesday and will last till March 2020. (Xinhua/Ji Chunpeng)