Poplar itself is very accessible, with many leaves, and there will be a rustling sound when the wind comes. In fact, there is a saying called clapping, which means clapping, which is unlucky for the family. Another reason is that poplar itself is very tall. If planted in the yard, it will block a lot of yang, which will make the house particularly heavy. Three trees are planted in front of the door, and a family thrives for three generations.