《太平广记·卷四百二十二·龙五》
以前葛陂的竹，渔父的梭，雷氏的剑，尚且都是龙，怎么知道这名山大镇之中就没有龙呢？
昔葛陂之竹，渔父之梭，雷氏之剑，尚皆为龙，安知此名山大镇，岂非龙潜其身耶。
In the past, Gebei's bamboo, the fisherman's shuttle, and Lei's sword were all dragons. How do we know that there are no dragons in these famous mountains and big towns?