Most of them are near springs. "The Xi'an Banpo site is located above the terraces of the Chan River, a tributary of the Wei River. The terrain is high and gentle, and the soil is fertile, suitable for living and reclamation. It can be seen from this that the tribes at that time had already made a choice about their living environment, and this choice was based on their understanding of the geographical environment and Feng Shui knowledge, and they understood the relationship between the living location and the sunshine and wind and cold. For example, the house in the middle of Banpo faces east, and the houses surrounding the big house clan members mostly face south, which shows the characteristics of "liking the southeast and hating the northwest". There are defensive ditches around the site; there are public roads to the north and south of the ditch. Cemetery, residence and cemetery are separated ("Feng Shui Exploration"). So we can understand it first, but believe it or not, my personal suggestion is not to believe it, because if it is really possible to seek good luck and avoid disaster, then China will not change dynasties. Every dynasty has the Imperial Heavenly Supervisor, which is the best at that time. Even if you are a Feng Shui master, you still can't help the dynasty change its destiny, and it will still perish. So I don't believe it. If we study our culture, it can help you. Hope to adopt it, thank you