先秦时期,长江和黄河流域的诸民族,以楚为代表的南方,以三晋、齐鲁为代表的中原和以秦为代表的黄河上游西部文化,三个体系的差距颇大,宗教信仰、丧葬习俗、艺术、文学、历法诸方面都反映了不同文化的因素。秦汉时期,因建立统一帝国的需要,实行“书同文,行同伦”。改编行政机构,统一度量衡 In the pre-Qin period, the ethnic groups in the Yangtze River and the Yellow River basin, the south represented by Chu, the Central Plains represented by Sanjin and Qilu, and the western culture in the upper reaches of the Yellow River, represented by Qin, had a large gap between the three systems. Religions, funerals Customs, art, literature, and calendar reflect all aspects of different cultures. Qin and Han dynasties, due to the need to establish a unified empire, the implementation of “book with the text, line homosexuality ”. Adapt the administrative agencies and unify the weights and measures