2. From the point of view of air quality, ecologists' research shows that layer 8~ 1 1 is a soot layer in environmental science. The airflow around the high-rise building will have the effect of "canyon effect", which is easy to disturb the houses near the building. This height is about 30 meters.
3. From the lighting point of view, if you choose floors below 3 floors, you should consider whether you can ensure effective sunshine, and whether the effective sunshine from winter to day is not less than 1 hour.
4. From the point of noise pollution, low-level noise and pollution have great influence. For example, car noise, vent noise and air pollution will all be affected to some extent.