evidence: The map touches on multiple territorial disputes, among them Bolshoi Ussuriysky Island, which sits at the confluence of the Ussuri and Amur rivers that separate Russia and China. The island is known as Heixiazi, or Black Bear, in Chinese. [...] "Its settlement was marked by the ratification in 2005 of the Supplementary Agreement on the Russian-Chinese state border on its eastern part, according to which Bolshoi Ussuriysky Island was divided between the parties." "The delimitation and demarcation of our common border has been completed along its entire length (almost 4,300 km [2,670 miles]), including in 2008 on Bolshoi Ussuriysky Island."