In Feng Shui, it should be called Yin Shi (directly translated from Hokkien), which means that the body does not decompose after death. After many years, it is still intact as before, and some hair and nails continue to grow. This is extremely detrimental to future generations. There are two types of corpses in dry shade and wet shade. Generally speaking, the tomb in dry shade is usually located on the top of a mountain, while the tomb in wet shade is usually located in a valley between two mountains. An experienced person can tell at a glance whether a corpse buried underground is decayed.