What is the "ghost star syndrome point" in traditional geomantic omen?

What is the "ghost star syndrome point" in traditional geomantic omen? -Ghost star refers to the mountain behind the main mountain where the cave star is located, which "supports" the main mountain. With this "support", the main mountain can no longer retreat. It's like people playing some kind of push-forward game face to face. There is a stake behind one person, and with this stake, another person can't push it down, as steady as Mount Tai. Ghost star is the "bet" behind it. Why is it named Ghost Star? It means that its mountain is in the back, and generally you can't see your face. Like a "ghost", helping in the dark. If the selected acupoints are supported by a mountain behind the mountain, or a long mountain behind the mountain is more powerful, it means they must be real acupoints. This is the so-called "ghost star syndrome point".