People mourn their family members at the Memorial Hall of the Victims in Nanjing Massacre by Japanese Invaders in Nanjing, capital of East China's Jiangsu province, Dec 3, 2016. A series of ceremonies were held by people to mourn their family members killed in the 1937 massacre ahead of the National Memorial Day for Nanjing Massacre Victims, which falls on Dec 13. [Photo/Xinhua]