People spend most of their day and life in bed, which is a place for people to rest, and most of their rest time is in the evening. This is the stage of "yang eliminating yin and long". However, when people fall asleep, their bodies are negative. In this extremely weak situation, they are most likely to be attacked by unlucky things, which will have a negative impact on people's health and paranormal.
There are too many things under the bed, blocking the passage of the qi of the earth pulse. Unlucky sundries are easily invaded by unlucky gas. It is especially forbidden to put shoes, dirty clothes, pots and pans, ironware, etc.
Therefore, we should always keep the bed ventilated and clean.