Children join a memorial activity at Chinese People's Anti-Japanese Aggression War Memorial Hall in Beijing on China's National Memorial Day for Nanjing Massacre Victims on Dec. 13, 2017. (Photo: China News Service/Du Yan)
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Children join a memorial activity at Chinese People's Anti-Japanese Aggression War Memorial Hall in Beijing on China's National Memorial Day for Nanjing Massacre Victims on Dec. 13, 2017. (Photo: China News Service/Du Yan)
