What does the tombstone say (auspicious to the end of the mountain, ugly to the back) mean?

The ugly direction of the mountain is to sit on twenty-four mountains. It's what we often say: sit southwest facing northeast, and southwest Kungua manages the three mountains. Ugly, ugly, ugly, cloudy, twenty-four mountains and one mountain 15 degrees, 60 penetration of earthworm, 72 penetration of mountain dragon, 120 points (3 degrees) Kong Xuan Feng Shui believes that only 9 degrees is positive, and if it exceeds 4.5 degrees, it will be used in both directions. In order to achieve a prosperous feng shui pattern, people usually go in two directions, such as the city gate. So you mean Kungua is above 4.5 degrees on the left side of the mountain, near Guishan. I wonder if you can understand this.