Rushan and Chengyang are county-level cities with administrative levels. But it's still different Chengyang is close to Qingdao and its industry is relatively developed. The air quality is definitely not as good as Rushan and the northern part of Rushan Silver Beach, and it is not humid. Traffic, because Chengyang is close to Qingdao, can be better than Rushan. But Rushan has convenient transportation (county). Chengyang's living standard should be higher. However, in terms of health and housing, I think it is better to live in the north of Rushan Yintan. I think you'd better make a field trip. After all, others say it's indirect impression, and personal survey is direct impression.