1206年,成吉思汗建立大蒙古国后,遵循“太祖皇帝初建国时,哥哥弟弟每商量定,取天下了呵,各分地土,共享富贵”的原则,自己分享九十五个千户组成的“中央兀鲁思”外,又分配给诸弟、诸子农土和百姓,形成了诸王兀鲁思。在成吉思汗“中央兀鲁思”的东方,是诸弟的兀鲁思;西方是诸子的兀鲁思。东方兀鲁思中,成吉思汗幼弟斡赤斤的了兀鲁思“位于蒙古斯坦遥远的东方角上,因此在他们的彼方就再也没有蒙古部落了”斡赤斤兀鲁思的具体方位究竟在哪里呢?国内外学者有不同的解释。日本学者箭内博士认为在兴安岭以东、洮儿河、嫩江流域;杉山正明则提出了与箭内博士不同的看法。他认为斡赤斤的领地 In 1206, following the establishment of Greater Mongolia by Genghis Khan, he followed the principle of “when the emperor Tajud was first founded, his brother and brother shared a common understanding of wealth, sharing each other’s land, sharing the world with each other.” Of the “Central Wulu Si”, but also assigned to all the brothers and sons, peasants and civilians and people, formed the King Wu Ruth. In Genghis Khan “Central Wulu Si” in the East, is the brother of Wulu Si; the West is the philosophers Wu Lu Si. In the East Wulu Si, Genghis Khan’s younger brother did not pay any attention to the fact that Wululusi was located in the far eastern corner of Mongolia and therefore there was no Mongolian tribes anymore. Where are you? Domestic and foreign scholars have different interpretations. Japanese scholar Dr. Jiannei thinks east of Xing’an Mountains, Taoerhe River and Nenjiang River basin; Masayoshi Sugiyama put forward a different view from Dr. He thinks that he will do his best