What about the mouse hole next to the grave on the map?

A mouse hole, a place to store food and hide food thieves.

Generally, it refers to a villain or employee who steals the owner's (grain) property and takes it for himself.

Geomantic omen means that a villain takes things or possessions that don't belong to him as his own, usually referring to breaking money.

There is a mouse hole next to the grave, which usually means that assets are interfered by villains, there are loopholes and property losses. Most of them are based on breaking money ~ ~ ~