2. Clean: the air, tap water, the streets are very clean, there are only a few smelly places, and there are even fewer people who smoke while walking.
3. Quiet: no one talks loudly, there is no public video or music, and there is no square dancing.
4. Exquisite: many things that look very general from the surface, the structure and design are very advanced, without some level of people still can not see.