More than 300 Neolithic Age sites dating from 10,000 to 4,000 years ago have been discovered in the Liyang Plain which located in the northwest of Hunan Province.This article observes and analyzes the changes in the relationship among the prehistoric settlements in the Liyang Plain on a large time scale,from the initial equal settlement to the urban-rural differentiation marked by the emergence of Chengtoushan City,and then to the control and dependence between urban and rural areas shown by the Jijiaocheng sites group.The inference is that the main driving force is the origin and development of rice agriculture,and provides a regional case for the study of relationships among prehistoric settlements.
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