What do Chinese furniture ornaments pay attention to?

Put some furniture at home, most people put it at home according to their own preferences and convenience. I don't know what feng shui knowledge should be paid attention to. For example, the bed in the bedroom is the main bed and the bedside table is the secondary bed. There can only be one main bed, and the auxiliary beds are paired. For example, it is best to put only one bed in a room. No matter how big the room is, try not to put two identical big beds without special circumstances, otherwise the two hosts will get hurt when fighting. If you must pair up, there must be one bedside table on each side, and it is not good to put a bedside table in the room. "The bedside table is single, and people are also playing single."