Ah, thesis, give you a general direction. From an economic and cultural point of view. The small foreign population, closed culture and lack of vitality are not conducive to the improvement of the public's ideological level and there is no communication. The foreign population is small, and the funds and consumer groups needed for local economic prosperity cannot be enriched. Look at the earliest businessmen in Qinhuangdao, especially in commerce, hardware fittings, ceramic building materials, tea, tobacco and alcohol, and many Zhejiang businessmen and Fujian businessmen in Qinhuangdao. They came earlier, which objectively brought new ideas, fresh blood and a promotion to the local economic construction. Of course, on the other hand, not all of them are good. If they cannot be effectively guided and are not inclusive enough, they will also have negative effects. For example, foreign buyers push up housing prices, such as public security issues.