What is the meaning of "Xuanwu" in Feng Shui?

What is the meaning of "Xuanwu" in Feng Shui?

In astronomy, Xuanwu was originally the life phenomenon of the seven-star fighting, bull, female, emptiness, danger, room, and wall in the north of the sky. It is used in Feng Shui to refer to the mountain behind the cave or the house of the Yang.

Fengshui experts believe that the mountain of Xuanwu should bow down, and the mountain will gradually sag toward the cave to meet the burial cave. Guo Pu said in the "Burial Sutra": "Xuanwu hangs his head." Annotated: "The head of the head is lowered, and the peak of independence is gradually descended. It is also buried by people. The place where you receive it, the water does not flow, and you can sit and sit at ease. At the beginning, the head is closed. If water is injected, it will pour out, and if you can’t stand it, it is the place of dendrobium. "Essence" says:'People live on the mountain, and water is poured into the heart of the hall.' It is also its meaning. and also."

In fact, the requirements of Xuanwu, like the Qinglong, Baihu, and Suzaku, should be prostrated and embrace sentimental. If he raises his head, he is ruthless and fierce. And if there is no mountain of Xuanwu, the wind will pass back and forth, and there will be no gas to gather, and it will be a land of ten cheapness.