People usually choose seven or eight floors based on the following aspects:
Air quality: too low floor air is turbid and contains many impurities; On the higher floors, the air is relatively thin. These are not suitable for some people with diseases, so the middle level is a good choice.
Psychological status: high floors are easy to cause psychological depression; The floor is too low, noise, humidity and other issues need too much attention, which easily affects the psychological state of living. The height of the middle floor is moderate, which is not easy to cause psychological problems.
Potential safety hazard: A house with seven or eight floors will not have the risk that the ground floor will be easily stolen, and there will be no fire escape problem.
Moreover, the number 8 is very auspicious in the traditional sense. To sum up, it is definitely a good thing that the house can buy the eighth floor.