Naval soldiers salute on a ship before departing to participate in Sino-Russian joint naval drills, at a port of Qingdao city, East China's Shandong province on July 1, 2013.[Photo/Xinhua] 

A naval soldier stands on a ship before departing to participate in Sino-Russian joint naval drills, at a port of Qingdao city, East China's Shandong province on July 1, 2013.[Photo/Xinhua]