What effect will the nails on the wall have on Feng Shui?

In order to place sundries or decorations conveniently, nails or hooks are usually used on the wall. Hang a painting with a nail. After the painting is hung, its magnetic field will affect the Feng Shui Bureau, but the nail will not. But after the painting is taken down, the exposed nails will have a bad effect. There are nails on the west wall, which indicates that the eldest daughter will have physical problems; If there are nails on the southwest wall, the mother's health will go wrong; Therefore, the nails that are no longer used should be pulled out immediately, so as not to destroy the feng shui layout in the home.