Second, there was no reinforced concrete in ancient times, and the house was not built high. The higher they are, the more dangerous they are. At that time, as soon as geomantic omen was popularized, someone would take stones from the foot of the famous mountain in the motherland, transport them to the place where they started, and bury them underground to pray for peace. The other is a town house with the aura of Lingshan.
Third, it's just a ceremony and it doesn't make any sense. It is also a partial inheritance of tradition.