《徐霞客游记·粤西游日记一》
又往西，一个山洞面临江流，泉水从洞东侧裂石中流出，名叫玉龙泉。
又西，名玉龙泉。
Going further west, a cave overlooks the river. Spring water flows out from the cracks in the stone on the east side of the cave, which is called the Jade Dragon Spring.