Bowing to the four corners before occupation is unique to the Pearl River Delta, and there is no such ceremony in eastern Guangdong and western Guangdong. Worship the four corners is actually worship the five parties (also worship in the middle), generally asking people to worship or asking people to take worship. There are many kind words and congratulations to say in the worship ceremony. The worship of four corners is essentially the worship of dragon gods and land gods in five places. The choice of time is based on the time of joining the day shift. Generally speaking, it is mostly from midnight to before noon, because it is better to choose the time for Yang Zhai to join. But there are also times when the owner and the direction of the house match differently.