What are the characteristics of the tombs of emperors and princes and nobles in the Southern Dynasties?

The tombs of emperors and nobles in the Southern Dynasties paid great attention to geomantic omen, so-called "looking at the gas". The site selection should be "backed by the mountain peak and facing the plain". Feng Shui, also known as the complete art and the art of Kate, originated in the Eastern Han Dynasty. Judging from the topographic position of these tombs, it basically conforms to this theory of geomantic omen.