As the rural saying goes, &”;No bamboo is planted in front of the house, and no trees are planted behind the house.&”; Simply explained, in the southern region, bamboo is not released in front of the house, but trees are planted. Because of the geomantic reasons of the house, and the damage to the foundation of the house causes the foundation to sink, the north is different from the south, commonly known as no cypress is planted behind the house, and no willow is planted in front of the door. It is an unlucky saying in front of the door, and this is just a custom that the people keep taboo.