《徐霞客游记·滇游日记十五》
看到州北有冈从东边向西突起，冈北又有冈从西边向东突起，在坞中交错，是宾川州溪流下游的关口，溪流到这里才曲折绕冈，于是得以看出其地形。
望州北有冈自东界突而西，其北又有冈自西界突而东，交错于坞中，为州下流之钥，溪至是始曲折潆之，始得见其形焉。
There is a hill to the north of the prefecture that rises from the east to the west, and another hill to the north of the hill, rising from the west to the east. They intersect in the wu, and this is the pass at the downstream end of the Binzhou Prefecture stream. Here, the stream turns and flows around the hill, so its terrain can be seen.