Yu Changxiang(2th L), victim and survivor of Nanjing Massacre, and his three daughters receive data sets about the massacre during the launching ceremony of a project to register victims of Nanjing Massacre, in Nanjing, capital of east China's Jiangsu Province, July 6, 2014. The Memorial Hall of the Victims in Nanjing Massacre by Japanese Invaders officially began to register the victims in massacre on Sunday. [Xinhua]