What's the point of putting money in a pillow?

Putting money in a pillow is regarded as a way to make money in some places. Some people say it can stabilize the house. There is a folk saying that putting coins under the pillow can make money, whether it is positive or partial, as long as it can help you increase your wealth, you can say that your wish has come true. The number of coins under the pillow is also very particular, so you can't put them at will. Eight or sixteen coins are the most suitable, because eight coins are "issued", which makes sense, but you should pay attention to the problem of how many coins to use. Too many coins are not necessarily good. In addition, some people will put some coins under each pillow when they move, mainly because of the psychological effect of getting rich. The old man thinks this is a kind of "mark" of money. With coins, big money will follow.