《太平广记·卷四百二十·龙三》
忽然有一天，三个老头一大早就来拜谒玄照。他们说： 我们三个弟子，是龙，各有自己的职务，也很劳苦，已经好几千年了。
忽一旦，晨谒玄照曰： 弟子龙也，各有所任，亦颇劳苦，已历数千百年矣。
One day, three elderly men came to pay homage to Xuanzhao right in the morning. They said: We, their disciples, are dragons. Each of us has our duty and we have been struggling for thousands of years.