What is concave wind in grave feng shui?

Also known as Tengwu Point and Baitingzhizang. It refers to the acupuncture point where the Luocheng Yuan structure is defective and is blown away by the external wind. Feng Shui experts believe that the vitality will be dispersed by the wind. Therefore, around the acupuncture point, dragons, tigers, ghosts, music, text greetings, tooth flags and guard sand must be carefully wrapped around so that there are no gaps, so that the Qi of the five elements of common people can be gathered inside. If there is any dent, the wind will sweep away the cave hall, and the vitality will be gone, and the burial will be nothing more than a rotten corpse. Guo Pu's "Burial Sutra": "The husband's qi can disperse the vitality, and the dragon and the tiger guard the area points. The middle fu is stacked on top of each other, with the left and right empty, the front is wide and the back is empty, and the vitality is dispersed in the wind. "The Sutra": Tengwu The acupuncture point is where the broken coffin is stored. "Note: "The Qi of heaven and earth turns into the wind, which can best disperse the Qi, so it must be guarded by the front, rear, left and right points, and then it can touch the knot in Ruotang Bureau. The stacked ridges are all bordered by gaps on the left and right, wide in the front and missing in the back. The fusion of the earth is all blown away by the wind, and the vitality cannot be accumulated. Put it down. Burying it is not beneficial to survival, it is just a rotten coffin."