Five thousand years ago, China entered the so-called legendary "heroic age". Most of the ancestors from the Yellow River basin to the Yangtze River Basin entered the stage of tribes and tribal alliance. Through the legend of this period, we can see the process of social change from the disintegration of primitive society to the emergence of the state.
The distribution and development of Xiayi tribes In the middle and lower reaches of the river basin, gorge, great plain and its nearby hills and slopes, known as the cream soil fertile field, from a very early time, many clans and tribes have been developing these places, operating a variety of economic life based on agricultural production, so this area has become the center of China's ancient historical development, known as the Central Plains.
