《徐霞客游记·粤西游日记二十二》
正当县城的西面，只有一条山脊延伸而过的山脉，山脊北边是流来的江水，山脊南面就是流去的江水，相距很近。
当城之西，只一脊过脉，脊北则来江，脊环则去江，相距甚近。
Right at the west side of the county, there was a mountain ridge that stretched out, the river flowed to the north of the ridge and flowed away to the south of the ridge.