《搜神后记·卷一》
开始时洞内很狭窄，越往前走就越开阔宽敞，这个人就突然消失了。他看见这里有数十公顷良田，于是就在这里开垦耕种，作为世世代代的事业。
初甚急，前辄闲旷，便失人，见有良田数十顷。何遂垦作，以为世业。
The cave was very narrow at the beginning, but it became wider and more spacious the further he went, and this person suddenly disappeared. He saw that there were dozens of hectares of good fields here, so he reclaimed and cultivated the land here as a career for generations.