《太平广记·卷三百九十七·山（溪》
其宅基占地约有三亩，下陷成大坑，这是因为与地基相连的地也一起上升而成。
其宅基三亩许，陷为坑，此盖连地而上升也。
The basement of the house occupies about three mu of land, which has sunken into a big pit because the ground connected to the foundation also rose together.