What kind of copper coins should be put on the beam?

The upper beam is the most important part of building a house, and the time should be chosen at the time of "full moon" and "high tide", which means family reunion and money pouring in. If the time of your family's birthday conflicts with Liang's, you must avoid it. There must be a sacrifice to the gods in front of the beam, and there is a "whole pig" (that is, a pig's head and a pig's tail, which means a whole pig), commonly known as "benefiting the market". Fish, goose, tofu, eggs, salt and soy sauce are five or seven colors. They are served in wooden red lacquer sacrificial plates, as well as 24 bowls of other dishes and 12 pots of fruits from north and south. Post couplets such as "Liang Xin meets the ecliptic day and the column meets the purple star". Use yellow or green paper for couplets, and avoid red paper. HongLing is hung on both ends of the beam, and a copper coin is hung on the HongLing, which is auspicious.

Moreover, the money you choose should be auspicious, and Shunzhi Kangxi will do, including spending money, bumper harvests, good luck and so on.