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People mourn victims of the Nanjing Massacre during a ceremony to mark China's sixth National Memorial Day for Nanjing Massacre victims in Nanjing, east China's Jiangsu Province, Dec. 13, 2019. (Xinhua/Li Yuze)
People mourn victims of the Nanjing Massacre during a ceremony to mark China's sixth National Memorial Day for Nanjing Massacre victims in Nanjing, east China's Jiangsu Province, Dec. 13, 2019. (Xinhua/Li Yuze)