However, there are already fish. This is a cave full of land and gas. Because there is water, it is generally not suitable to live in a yang house, preferably a yin house, and it needs to be buried in a special way. In a few years, future generations will be promoted and prosperous.
If you must build a house (Yang Zhai), it will be more troublesome. You should ask a professional architect to settle the air, level the hole and deal with it, otherwise the good luck will dissipate.