A few silver dollars are buried under the threshold stone.

Putting seven coins on the doorsill is like stepping on the Big Dipper, but the actual effect needs to be verified. Because the Big Dipper Array is very complicated, it is not just seven identical modern coins, so it is suggested to put five emperors' money.

Putting coins on the threshold is a custom handed down by our ancestors. First, you can put modern coins. If your family is a cadre, you can put seven coins under the door. If you are in business, you can put eight coins under the door. Then you can use coins to make access safe. You can buy two pieces of cinnabar from the drugstore, sprinkle it under it, and put a peach branch facing south under it. All these can be done as long as you can.