由于自然条件、社会条件的不同以及各种具体的历史原因，不同的国家和民族在发展与进步中出现了差异，这种差异在当代显得更加明显与突出。一个国家或民族，要想在今天获得迅速发展与长足进步，就必须树立开放观念，实行开放政策，把国门、省门、地区的门打开，引入所缺的资金、科学技术与现代化管理，以弥补自己的不足，只有如此，方可加快发展的步伐，否则，夜郎自大，闭门建设，就会延缓历史发展的进程。 Due to the differences of natural conditions, social conditions and various specific historical reasons, different countries and peoples have shown differences in their development and progress. Such differences have become more obvious and prominent in the contemporary era. If a country or nation wants to achieve rapid development and great progress today, it must establish an open concept and implement an open policy of opening doors in its own country, province and region to introduce the lack of funds, science, technology and modern management so as to Only by so doing can we speed up the pace of development. Otherwise, the arrogance and closed door construction will delay the course of historical development.