What is the reason why the bones of the buried victims are black?

If no one has a fortune health problem, it will be fine. On the contrary, it is necessary to move the grave. Because according to feng shui theory, black bones mean that graves in cemeteries often get water. Most of them are still stagnant water and sewage, and living water will not make bones black. Generally, that kind of land belongs to the coolest place. It is not suitable for burying the dead, which will have a direct impact on the families of the dead.