The first taboo of feng shui wheel is that it can't be placed behind the sofa. Relying on water is ominous, because water is unreliable. Then the water in the feng shui wheel should be kept at home, so all the financial resources are at home. In the same way, the home feng shui decoration of the god of wealth is of course home-oriented.
It is not good to put a bed by the window in the bedroom. It's not easy to talk about it. Insecurity can cause mental stress. The back window of the seat is also one of the taboos of home feng shui. "Relying on the mountain to eat the mountain" is like saying that you should lean against the wall.