(1) Adapt to the height of the room. When the height of the living room is less than 3 meters, the chandelier with long suspenders and the crystal lamp with high sag should not be selected for the living room lamps, otherwise it will hinder safety.
(2) Adapt to the room's face power. The lighting area should not be greater than 2%-3% of the room area. If the lighting is insufficient, the quantity can be increased, otherwise the decorative effect will be affected.