Wang Wen, commander of the Chinese People's Liberation Army (PLA) Garrison in Macao Special Administrative Region, tidies the ribbon on a flower wreath to mourn victims of the Nanjing Massacre during China's first National Memorial Day for Nanjing Massacre Victims in Macao Special Administrative Region, Dec. 13, 2014. In February 2014, China's top legislature designated Dec. 13 as the National Memorial Day for Nanjing Massacre Victims to mourn those killed by Japanese invaders and expose war crimes committed by the Japanese. (Xinhua/Cheong Kam Ka)