evidence: But, despite the current situation the Korean scientists emphasize the Peking Treaty in solving the territorial issue between Russia and Korea. According to a number of Korean scholars, Peking Treaty of 1860, has no legal force for South Korea, and this issue can be solved only after the unification of the Korean Peninsula. In this case Professor Yang Tae Jin states that, despite the fact that the Noktundo Island was annexed to Russia, it is a historic part of Korean territory, which must be returned. Thus, declaring that Noktundo Island is an ancestral territory of Korea, South Korean media are based primarily not on the legal documents, but on the historical identity of the Primorsky Territory, recorded in the annals of Korea. At the same time the South Korean experts, paying attention to the location of the island Noktundo, see the obvious economic benefits, calling it the "Manhattan of the North-East Asia." In this regard, experts from South Korea, realizing the importance of developing the area of the river Tumengan, at discussion of conditions of economic projects between North Korea, Russia and South Korea suggest the Korean side to raise the problem of ownership of the Noktundo Island.