先秦时期中国长城地带大致存在一条陶器北界线,南侧主要分布着以农业--半农业经济为主的定居人群,北侧分布着以游猎-游牧经济为主的游动性人群。陶器北界线在不同时期南北摆动:东部摆动频繁、幅度大,与气候演变节奏恰好合拍;西部摆动不甚频繁、幅度小,主要反映人类的自主开发过程;中部的摆动介于二者之间。随着界线的摆动,界线两侧人群间在文化和血缘上不断发生交流,而且其互动关系的方向总是随着界线的摆动而发生逆转:界线北移时南侧文化占上风,界线南移时北侧文化更强盛。 In the pre-Qin period, there was a north line of pottery in the Great Wall of China. The southern part mainly consisted of settlers dominated by agriculture and semi-agricultural economy. On the north, there were motivated people mainly engaged in hunting and nomadic economy. The northern boundary line of pottery oscillates in different periods in the north and the south: the eastern part swings frequently and with a large amplitude, which coincides with the rhythm of climate evolution; the western part is less frequent and has a smaller amplitude, which mainly reflects the human self-development process; As the boundary swings, the two sides of the boundary line continue to exchange their cultures and bloodlines, and the direction of their interaction always reverses along with the swing of the boundary line: when the boundary line moves northwards, the south culture prevails and the boundary line moves southward When the northern culture is more powerful.