《徐霞客游记·楚游日记九》
桥侧面江滨有石头耸突插立，形态如同永州城外愚溪桥边那些，但比愚溪桥边的更透漏高耸陡峭，那些石头如枝干分向四处，中间是空的，可以分开花瓣似的石片走进石隙中，也可以穿过壶形的孔道进到小洞中，这就是所说的五如石。
桥侧江滨有石突立，分岐空腹，其隙可分瓣而入，其窦可穿瓠而透，所谓五如石也。
There are stones protruding on the side of the bridge, which are similar to those next to Yuxi Bridge outside Yongzhou City, but they are taller and steeper. The stones spread out like branches in all directions, and there is a void in the middle. You can open the stone petals and enter the stone gap, or you can enter the small hole through the jug-shaped passage. This is the so-called Wu Ru Stone.