1. Context of the Yellow River
from ancient times to the spring and Autumn period, the Yellow River has been performing the drama of "dragon wagging its tail" in the North China Plain. The frequent diversion of roads, excessive flood and the formation of large loess fields provide vast, fertile and soft land for dry farming. The climate in this area is quite regular, and the rainy season is just in the growing season of crops. Therefore, millet, which grows in Zaoyi loess belt, has a short mature period and is easy to be preserved, has become the main food crop in this period. The ancient culture of the the Yellow River River Basin has experienced its own long-term development and evolution, and fully absorbed the cultural essence of the surrounding area, and finally became the mainstream of early Chinese civilization. Laoniuwan is located in the Qingshui reach of the Grand Canyon of the Yellow River in Shanxi and Inner Mongolia, with a total length of 76 kilometers, known as "the small Three Gorges in the north". It follows the magnificent culture of the Yellow River Basin and dominates the direction of civilization in this area. 1. Yushun period: Bingzhou area; 2. Spring and Autumn Period: Linhu nomadic area; later, Yunzhong County, which was taken by Wuling king of Zhao state; 3. In the Han Dynasty: Dingxiang County was set in the northeast of Yunzhong County, and three counties were under its jurisdiction; 4. Five Dynasties, Sui and Tang Dynasties: each important town was set here; 5. Yuan Dynasty: ningbian Prefecture was abandoned to the north From the Republic of China to the people's Republic of China, it was a county. During the Anti Japanese period, it was a strategic area of base area and enemy rear area.