As a tourist city, Qinhuangdao is located in the circle of Yan culture.
而作为旅游城市的秦皇岛，存在于燕文化的文化圈之内。
The central city plays an important part during the evolution process of metropolitan circle.
在都市圈的演化过程中，中心城市起着非常重要的作用。
The central city plays an important part during the evolution process of metropolitan circle.
在都市圈的演化过程中，中心城市起着非常重要的作用。
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