《太平广记·卷七十九·方士四》
郑还古从窗缝里往外瞧，看到电光之中有一健壮男子，自己把钓鱼用的绳子放进井里，好像有什么东西要钓，一连发了三道电光，到第四道电光时这个人就不见了。
还古于牖中窥之，电光间，有一力夫，自以约索于井中，如有所钓，凡电三发光，洎四电光则失之矣。
Zheng Hangu looked out from the window slit and saw a strong man in the lightning, putting his fishing line into the well, as if there was something to fish. There were three flashes of lightning in a row, and the fourth The man disappeared.