北方游牧民族与定居农业民族即汉人的对抗战净,是推动中国历史发展的动力之一。而长城,则是这一对抗战争的象征。首先越过长城,把版图推进到东夷地区的,是设置上谷等五郡的燕国,从此以后拥有众多民族的中国东北地区经常出现于史书之中。一般以为这一时期处在燕昭王时代,即战国后期。 自燕国设置五郡,中原系统文物开始流入该地区,至此该地区稳步登上历史舞台,故将此之前划为史前时代。本文所要探索的正是中国东北地 One of the driving forces behind the development of China’s history was the net war between the northern nomad and the settled agricultural nation of Han Chinese. The Great Wall is the symbol of this war of confrontation. First across the Great Wall, to promote the territory of the territory of Dongyi, is to set up five counties such as the Valley of Yan, since then has many ethnic groups in northeast China often appear in the history books. Generally believed that this period is in the Yanzhao Wang era, the Warring States period. Since the establishment of five counties in Yan, Central Plains system of cultural relics began to flow into the area, thus steadily boarded the stage of history in the region, it will be classified as prehistoric era. This article is to explore is the northeast of China