Feng shui knowledge: cicada wing sand

The hidden micro-convex shape wraps the center of the cave on both sides of the hall. Its name is cicada wing, and the Dragon and Tiger Mountain is the cicada shell, so Tibetan sand is the soft wing under the shell, hence the name. Liu Ji's "Haoran Manxing? Preface: "there are veins in the middle stream, bumps and knots, and muddy sand beside them, which are cicada wings." ..... wearing a dragon and a tiger, born next to the knot bag, thin and close-fitting, with slight awning protection. It is like a cicada, with soft wings under its hard wings, so it is called cicada wings. "The sand with cicada wings, sometimes with edges and sometimes without edges, is called' bright stocks and dark stocks', with bright shoulders and dark wings. The characteristics of cicada wing sand are hidden and light, as thin as cicada wings, while those bright and dark ones can't be detected unless they are unique in spirit. Its function is that the boundary beam is slightly foggy and tangled in front of the hole. Miao Xiyu's Buried Wings? According to the observation of the shape, "there must be two pieces of cicada wing sand outside the cover, which rumble faintly and go straight into the cave, and then are forced to hydrate in Xiaoming Hall. As the old saying goes,' There are shoulders bright on the top, wings dark on the bottom, shares bright and dark, and edges boundless' refers to this. People who are close to the light can't see it without their heart. "