evidence: China’s inclusion of the Russian territory of the Bolshoy Ussuriysky/Heixiazi island on the Amur River in its new map, despite the countries officially resolving the territorial dispute 15 years ago, could be a mistake, experts suggest. [...] The island, in the far northeastern part of Manchuria located at the confluence of the Ussuri and Amur rivers, had been the subject of an old territorial dispute between China and Russia.