What should I do if the coin on the beam of someone else's house falls to the ground?

You can put it back on an auspicious day.

Putting copper coins on the beams is actually for the town house This money also has a special name called house beam money. This is a traditional custom handed down from generation to generation. It is said that even poor families used to put a few copper coins under the beams as long as they built new houses.

Because most of the ancient money has been circulated for a long time, passed through the hands of many people, and the sunshine is strong, which can play the role of a town house under the beam.