黑龙江全长4000多公里,是一条穿越中国、俄罗斯、蒙古的界河。“黑龙江发源蒙古喀尔喀部之肯特山。其上游,蒙古谓之鄂伦河,他书亦作敖嫩河,即《元史》斡难河,元太祖始兴地也。自此东北流,经俄罗斯尼布楚城之南,入省北境,受西南来之额尔古纳河,经雅克萨城,折而东南,至黑龙江城北 Heilongjiang, a total length of more than 4000 kilometers, is a through China, Russia, Mongolia’s border river. Heilongjiang Province, origin of the Mongolian Khalkha Ministry of the Kent Hill .On its upstream, Mongolia called the Oro River, his book also for the Ao Nen River, that is, “Yuan Shi” , The south of Russia’s Nabucun city, into the province of the northern border, by the southwest to the Ergun River, the city of Jacques, off the southeast to Heilongjiang north