Chinese and Russian officers communicate during a reception held on the Russian guided missile cruiser Varyag in Shanghai, east China, May 19, 2014. Chinese and Russian naval forces held interchange activities on Monday to enhance mutual communication. The "Joint Sea-2014" drill will be held in the northern part of the East China Sea between May 20 and 26.Photo: Xinhua

Chinese and Russian officers communicate during a reception held on the Russian guided missile cruiser Varyag in Shanghai, east China, May 19, 2014. Chinese and Russian naval forces held interchange activities on Monday to enhance mutual communication. The "Joint Sea-2014" drill will be held in the northern part of the East China Sea between May 20 and 26. Photo: Xinhua

A band performs during a reception held on the Russian guided missile cruiser Varyag in Shanghai, east China, May 19, 2014. Chinese and Russian naval forces held interchange activities on Monday to enhance mutual communication. The "Joint Sea-2014" drill will be held in the northern part of the East China Sea between May 20 and 26. Photo: Xinhua

A Russian Naval Military band perform before a reception held on the Russian guided missile cruiser Varyag in Shanghai, east China, May 19, 2014. Chinese and Russian naval forces held interchange activities on Monday to enhance mutual communication. The "Joint Sea-2014" drill will be held in the northern part of the East China Sea between May 20 and 26. Photo: Xinhua

Chinese and Russian officers communicate during a reception held on the Russian guided missile cruiser Varyag in Shanghai, east China, May 19, 2014. Chinese and Russian naval forces held interchange activities on Monday to enhance mutual communication. The "Joint Sea-2014" drill will be held in the northern part of the East China Sea between May 20 and 26. Photo: Xinhua

Chinese and Russian officers and soldiers are seen at a buffet during a reception held on the Russian guided missile cruiser Varyag in Shanghai, east China, May 19, 2014. Chinese and Russian naval forces held interchange activities on Monday to enhance mutual communication. The "Joint Sea-2014" drill will be held in the northern part of the East China Sea between May 20 and 26. Photo: Xinhua

Chinese and Russian officers communicate during a reception held on the Russian guided missile cruiser Varyag in Shanghai, east China, May 19, 2014. Chinese and Russian naval forces held interchange activities on Monday to enhance mutual communication. The "Joint Sea-2014" drill will be held in the northern part of the East China Sea between May 20 and 26. Photo: Xinhua

A Russian Naval Military band perform before a reception held on the Russian guided missile cruiser Varyag in Shanghai, east China, May 19, 2014. Chinese and Russian naval forces held interchange activities on Monday to enhance mutual communication. The "Joint Sea-2014" drill will be held in the northern part of the East China Sea between May 20 and 26.Photo: Xinhua