For example, there are many place names with a long history in Henan Province. Today, we can still see Luoyang, Puyang, Huaiyang, Biyang, Qinyang and Ruyang, which are cities that stand by water. As far as the terrain is concerned, the sunny place is the table top, and the shady place is the inside. Houses should generally face the sun, not the dark side, because the sunny side is dry and the dark side is generally wet, which is not conducive to living and health.
Why can't the house be built in the valley basin?
The valley basin is low-lying and easy to avoid evil spirits. In modern society, valley basins are more susceptible to pollution. Due to the existence of mountain breeze and temperature difference, the valley is vulnerable to air pollution. During the day, the hillside is warm by the sun, and the temperature is higher than that of the valley, resulting in inversion, and the valley wind blows upward from the valley; At night, the hillside dissipates heat quickly, the temperature drops to be lower than that of the valley, and cold air goes down the mountain, forming a mountain wind blowing from the hillside to the valley. It's like the ebb and flow of the tide, with a pause in the middle. During the intermission between mountain breeze and valley breeze, it is the most unfavorable to the diffusion of pollutants, and a large number of pollutants stay in the valley, causing air pollution. Therefore, it is not suitable to build houses in the valley, but on the hillside, preferably on the sunny hillside.
Don't build the house into a basin. If the whole building foundation of a residential area is lower than the surrounding terrain, it makes people feel like living in a basin. The terrain is not well ventilated, daylighting and drainage, and they feel uncomfortable when they go home every day. Moreover, from the perspective of geomantic omen, some heavy polluted air often accumulates in the basin area, which has obvious damage to the health of residents, so we must pay attention to it when buying a house.