Commemorative event held on occasion of Int'l Day of Peace in Nanjing, China's Jiangsu

Student choir members from Nanjing University of Aeronautics and Astronautics sing during a commemorative event held at the Memorial Hall of the Victims in Nanjing Massacre by Japanese Invaders on the occasion of the International Day of Peace in Nanjing, capital of east China's Jiangsu Province, Sept. 21, 2019. (Xinhua/Ji Chunpeng)