Are some things told by the ghost blowing lights true? Are those geomantic things broken up?

Actually, the author said it all in the last movie ~! Geomantic omen is useless. The geomantic omen of the emperor's ancestral grave is not good, but it is still changing dynasties. As long as it is good for most people, this person's life will naturally be good. As the saying goes, if you get more help, you will get less help if you lose it. So don't trust those things too much, just look at them.