《太平广记·卷二十五·神仙二十五》
元柳二人从花草间偷偷地窥视，见千万条龙蛇，迅速地互相盘缠在一起成为桥的柱子。
二子于花间潜窥，见千龙万蛇，遽相交绕为桥之柱。
Yuan and Liu spied from the flowers and plants secretly, and saw that millions of dragons and serpents quickly coiled around each other to form the pillars for the bridge.