Sand and cave are like the relationship between monarch and minister, delicate and rounded like a harem beauty, bowing like a courtier and fierce and obedient like a soldier. Because of its different position, trend and shape, sand can be divided into sand-keeping, sand-welcoming and sand-welcoming. Zhongyun: "Stand upright on both sides to wait for the sand, which can shield the evil wind. Embrace the sand from the dragon's face, ward off evil spirits and concave the wind outside, and increase the momentum inside. Before going around the hole, facing the sand before standing the hole, depending on the wind direction, taking the upper wind is the upper sand, and vice versa. "
The distance between sand barrier and acupoints should be appropriate, harmonious and symmetrical, too far and too close will disperse, too high and too low will exert force.
Fortunately, sand is the main disaster, sharp circles are auspicious sand, and breaking sand is fierce sand.
Pay special attention to protecting the left and right sand in feng shui. On the left is Shangsha, also called Longsha, and on the right is Xiasha, also called Husha. There is a saying that "the green dragon should be high and the white tiger should be soft". So the sand above is higher than the sand below, and the arrangement of the sand is orderly, so the more layers, the better. It is necessary to guard the sand layer by layer and tilt it slightly inward to form a "land of wealth". If there is gurgling water at the foot of the sand, the mountain is surrounded by water.
There are three kinds of sand: fat circle is rich, beautiful and sharp is expensive, oblique and bloated is cheap, and others are disasters.