Does anyone know about geomantic omen related to stone mill?

Does any expert know the geomantic omen related to stone mill? According to legend, after death, people go through the Ten Halls of the Gate of Hell and the Prince of Yan Pass. Yan Xihui Wang will not spare those evil and fierce people in the world, but will punish them with punishment and punishment, so that they will suffer and be punished. Therefore, the stone mill can be kept at home to ward off evil spirits. Others warned not to do evil, not to do evil, and died, grinding and grinding.