What is the site selection principle of ancient buildings in China? What are the methods commonly used by the ancients to regulate Feng Shui?

Long Mai must be selected as the site. There are different opinions about the dragon head, the dragon tail, the dragon body and the dragon claw. If you want good feng shui, you should first look at the end of the earth when building a house, and then analyze your position at this end until you know where you are, so as to suit the remedy to the case and adjust the feng shui. It's the hardest to order Long Mai. It is impossible to point it out without Taoist practice. Even if it is planted, it depends on the size of Long Mai. If it's golden dragon wheat, it's not something that ordinary people can order. An expert has to order for years or even decades. If you scare the real dragon and it runs away, it's a waste of resources! There is a lot of knowledge in it. I think your question should be more detailed next time!