Int'l stamp exhibition themed on "city of peace" held in Nanjing, China's Jiangsu

A visitor views an international stamp exhibition themed on "city of peace" held at the Memorial Hall of the Victims in Nanjing Massacre by Japanese Invaders in Nanjing, east China's Jiangsu Province, Sept. 21, 2019. The exhibition opened here on Saturday and will be available until November. (Xinhua/Ji Chunpeng)