Photo taken on Oct. 8, 2009 shows an official letter for former Soviet Union leader Joseph Stalin written by former Chinese Premier Zhou Enlai on Oct. 1, 1949, during a historical documents exhibition of China-Soviet Union relations in Moscow, Russia. The China-Soviet Union Relations (1949-1955) Historical Documents Exhibition was opened here on Thursday and will last for two months.(Xinhua/Lu Jinbo)
Photo Gallery>>>