Directors of the Chinese and Russian naval forces arrange the deployment of forces in Shanghai, East China, May 20, 2014. The week-long China-Russia "Joint Sea-2014" exercise kicked off on Tuesday. A total of 14 vessels, two submarines, nine fixed-wing aircraft as well as helicopters and special forces from both sides will take part in the exercise. Photo: Xinhua

Tian Zhong (1st R, front), deputy commander of the Chinese Navy and the Chinese chief director of the "Joint Sea-2014", makes arrangements in Shanghai, East China, May 20, 2014. The week-long China-Russia "Joint Sea-2014" exercise kicked off on Tuesday. A total of 14 vessels, two submarines, nine fixed-wing aircraft as well as helicopters and special forces from both sides will take part in the exercise. Photo: Xinhua

Directors of the Chinese and Russian naval forces arrange the deployment of forces in Shanghai, East China, May 20, 2014. The week-long China-Russia "Joint Sea-2014" exercise kicked off on Tuesday. A total of 14 vessels, two submarines, nine fixed-wing aircraft as well as helicopters and special forces from both sides will take part in the exercise. Photo: Xinhua

Directors of the Chinese and Russian naval forces arrange the deployment of forces in Shanghai, East China, May 20, 2014. The week-long China-Russia "Joint Sea-2014" exercise kicked off on Tuesday. A total of 14 vessels, two submarines, nine fixed-wing aircraft as well as helicopters and special forces from both sides will take part in the exercise. Photo: Xinhua

Directors of the Chinese and Russian naval forces arrange the deployment of forces in Shanghai, East China, May 20, 2014. The week-long China-Russia "Joint Sea-2014" exercise kicked off on Tuesday. A total of 14 vessels, two submarines, nine fixed-wing aircraft as well as helicopters and special forces from both sides will take part in the exercise. Photo: Xinhua