Why can't dry wells be filled casually?

Superstition is that the well at home cannot be backfilled. According to geomantic theory, wells are wealth, so don't fill them. They can be blocked. Wells are mainly used to exploit groundwater. They can be combined vertically, obliquely and in different directions, but generally they are mainly vertical and can be used for water intake, drainage and water injection. According to the buried distribution of groundwater and the lithologic structure of aquifer, human beings have drilled various famous wells.