Did you say that the ancestral grave collapsed and leaked on the water?

The main reason for the collapse of ancestral graves is that coffins are all made of wood. Because of the long time, wood will rot due to the soaking of rain and the corrosion of soil. The coffin has a certain space, and the soil on the grave will naturally collapse after decay. These are all natural phenomena, nothing special.

As a descendant, after discovering the collapse of the tomb, it should be repaired in time.