The higher fifth floor will give people a wide view, good air quality and low noise; The natural wind is strong and the lighting is good. The higher the floor, the fewer obstructions and the better the lighting. For the lower floors, noise and dust pollution can be avoided, which is more suitable for the choice and residence of young and middle-aged people. Relatively speaking, the elderly are more conducive to the choice of low-rise housing, which can increase the opportunities for outdoor activities of the elderly.