Iron cabinets will produce a magnetic field effect in the bedroom.
Iron bookcases are not good. The five elements of iron are gold and the five elements of books are wood. It is not suitable to put iron bookcases at home. Iron cabinets can also have adverse effects on people and affect the indoor magnetic field. Large pieces of iron are not allowed. Leave it at home.
Magnetic field effect means that the magnetism of a substance and its mechanical, acoustic, thermal, optical and electrical properties all depend on the state of atoms and electrons in the substance and the interaction between them.