Why did you open the Longmen before tearing down the house in ancient times?

In the old society, many old houses were abandoned and uninhabited for various reasons. If the mud stays for a long time, it will accumulate a lot of dust and be buried, or there will be many animals basking in the sun or defecating. Over time, Gansu people thought there would be evil spirit, poisonous gas, poisonous gas and bacteria (D people have no common sense), so they tore it down.

There is also a superstitious explanation.

It's all from the previous sentence ```` which was passed down to E's family in ancient China. "One is nocturnal, the other is broken temples, and don't enter empty houses. "``````` It means that people who nocturnal want to stay overnight, and the other is willing to choose D's dilapidated and deserted temples, so it's impossible to enter D's deserted old house. ``````` (Everyone has a TVB, which is usually a place.

If individual rooms near your business are abandoned, there will be a practice of "opening the dragon's mouth". When you demolish, rebuild or move in again, you will "open the longkou" first. When you leave the ground, set a good day for Zuo, worship a god first, then make a hole in the roof and wait for the sun to shine in. (The ancient book "Notes on Lu Ban" says: "Abandon the old. At the same time, open the door. When D's bad atmosphere dissipates and is buried, D's empty past (that is, GUI) will be driven away, and then the pure land and Gansu can start construction.