《徐霞客游记·滇游日记十》
西北边的山坞中，有大沟壑环绕回旋，下面有两塘水，村舍坐落在水塘边，就是志书记载的勒甸村龙泉，塘中的水分为青色、白色。
西北坞中，有大壑回环，下有水二方，村庐踞其上，即《志》所载勒甸村龙泉也，其水分青、白色。
In the gully on the northwest side, there is a large ravine circling and winding, with two ponds below, and the village house is located by the pond, which is Leidiancun Longquan recorded in the chronicle, and the water in the pond is divided into blue and white.