Vice admiral Tian Zhong (C), commander of Russia-China joint naval exercise and commander of the North Sea Fleet of the Chinese People's Liberation Army, deploys forces during exercise in Qingdao, east China's Shandong Province, April 25, 2012. A series of operation drills were conducted during the second day of the Russia-China joint naval exercise on Wednesday. [Xinhua]

Vice admiral Tian Zhong (C), commander of Russia-China joint naval exercise and commander of the North Sea Fleet of the Chinese People's Liberation Army, talks with Russian commander during the exercise in Qingdao, east China's Shandong Province, April 25, 2012. A series of operation drills were conducted during the second day of the Russia-China joint naval exercise on Wednesday. [Xinhua]

Chinese and Russian commanders deploy forces during the Russia-China joint naval exercise in Qingdao, east China's Shandong Province, April 25, 2012. A series of operation drills were conducted during the second day of the Russia-China joint naval exercise on Wednesday. [Xinhua]

Vice admiral Tian Zhong (C), commander of Russia-China joint naval exercise and commander of the North Sea Fleet of the Chinese People's Liberation Army, watches exercise situation in Qingdao, east China's Shandong Province, April 25, 2012. A series of operation drills were conducted during the second day of the Russia-China joint naval exercise on Wednesday. [Xinhua]

Chinese commanders mark on the map during the Russia-China joint naval exercise in Qingdao, east China's Shandong Province, April 25, 2012. A series of operation drills were conducted during the second day of the Russia-China joint naval exercise on Wednesday. [Xinhua]