Artists perform Chinese original opera Rabe's Diary at the 3rd Chinese Opera Festival at Jiangsu Grand Theatre in Nanjing, capital of east China's Jiangsu Province, Jan. 10, 2018. Rabe's Diary, written by German John Rabe, recorded the atrocities committed by the ese troops he witnessed in Nanjing from September, 1937 to the following February, including the notorious Nanjing Massacre marked on Dec. 13, 1937, in which more than 300,000 Chinese were killed. (Xinhua/Chen Congying)