《徐霞客游记·滇游日记四十一》
那么此山真是这一片地方的名山，而且是顺宁府、湾甸州东西分界的山。
则此山真一方之望，而为顺宁、湾甸之东西界者也。
So this mountain is a famous mountain in this area, and it's a mountain that divides the east and west of Shun'ning prefecture and Wandian prefecture.