What's the point of gossiping about copper coins when building a house?

The standard custom is: when building a house, put 1 bagua copper coins in every corner of the house, totaling 4 pieces. There are some superstitious legends about this practice.

Jucai

When decorating, bury the silver dollar in the two corners of the south and center of the master bedroom, as well as the two corners and entrance of the living room, so as to gather wealth and form a cornucopia! But now it is popular to put 50-cent gold coins in the room.

Scatter money

Throwing money is stepping on gold and silver. Used to be gold and silver. Now it is changed to 50 points 1 yuan.

lucky

This is an auspicious way to win a good lottery ticket.