Armed policemen hold wreaths during a rehearsal for a ceremony to mark the 72nd anniversary of the Nanjing massacre committed by Japanese invading troops during World War II, at the Nanjing Massacre Memorial Hall in Nanjing, capital of east China's Jiangsu province, Dec. 12, 2009. Dec. 13, 2009 is the 72nd anniversary of the Nanjing massacre, which left 300,000 Chinese people dead. [Dong Jinlin/Xinnhua]