China and Russia hold a ceremony on the Heixiazi Island Oct. 14, 2008 to unveil the boundary markers for the eastern section of their border. (Xinhua/Wang Yongji) Photo Gallery>>>

Chinese soldiers start defense work on the Heixiazi Island after China and Russia held a ceremony to unveil the boundary markers for the eastern section of their border on Oct. 14, 2008. (Xinhua/Wang Yongji) Photo Gallery>>>