(1) Adapt to the height of the room. When the room height is below 3 meters, it is not advisable to use long hanging rod chandeliers and high hanging crystal lights, otherwise it will hinder safety.

(2) Suitable for the area of the same room. The area of lighting should not exceed 2% -3% of the room area. If there is insufficient lighting, the quantity can be increased, otherwise it will affect the decoration effect.

(3) Adapt to the overall decoration style. Chinese, Japanese, and European lighting fixtures need to be coordinated and unified with the surrounding decoration style to avoid giving people a cluttered feeling.

(4) Adapt to the environmental quality of the same room. Special environments such as bathrooms and kitchens should choose lighting fixtures with moisture-proof and waterproof functions to ensure normal use.

(5) Adapt to the load-bearing capacity of the top. Especially for the top of the suspended ceiling, there must be sufficient load to install suitable lighting fixtures.