In the traditional culture of China, the cave on the grave is regarded as an unlucky symbol, which may indicate that the descendants of the family will suffer poverty and misfortune. In some areas, people think that destroying graves will affect the fate and wealth of families. In order to prevent the grave from being destroyed, some people will set traps or obstacles around the grave to protect it.
However, modern science believes that there is no direct connection between the hole in the grave and family poverty or misfortune. Therefore, we should look at this problem rationally and not be overly superstitious.