What effect will the depression have on the house?

1. It was built in a low-lying place. If mountain torrents occur, soil erosion and floods will easily occur, which may cause loss of life and property. 2. The indoor floor is low, the groundwater level is high, and the indoor humidity is high. If you stay in the house for a long time, you are likely to suffer from arthritis, rheumatic heart disease and so on. Therefore, ditches should be dredged around the building foundation to reduce the groundwater level. 3. Where the terrain is low and the soil is wet and soft, the humidity may be high all year round. In the rainy season, walls and floors are prone to moisture, and there are bound to be many mosquitoes in summer. Where the terrain is high and the soil is hard, the humidity is relatively small. Even if you live on the first floor, you generally don't feel wet. 4. Geomantic low-lying land, lack of sunshine, humidity, frequent diseases, adverse to people's health, lack of sunshine in houses, many evil spirits, poor living, more lights to ward off evil spirits in modern times, using large light bulbs.