The dividing line of the upper and middle reaches of the Yellow River is Mengjin County, Luoyang, Henan Province. In the historical period, the river course of the Yellow River has also evolved in the plain reach of the upper and middle reaches, and some changes are still great. For example, the Hetao reach in Inner Mongolia was mainly divided into two branches below Dengkou before 1850. The North Branch is the mainstream, the foot of Yinshan is called Wujia River, and the South Branch is now the Yellow River.
The Yellow River is a large river located in northern China. It is one of the longest rivers in the world and the second longest river in China (also known as the second largest river). The total length is about 5464 km and the drainage area is about 752443 square kilometers. The basin has long winter and short summer, wide temperature difference between winter and summer, and distinct seasonal temperature changes. The Yellow River originates from the yoguzonglie basin at the north foot of Bayan Kara mountain on the Qinghai Tibet Plateau. From west to East, it flows through nine provinces (autonomous regions) of Qinghai, Sichuan, Gansu, Ningxia, Inner Mongolia, Shaanxi, Shanxi, Henan and Shandong respectively, and finally flows into the Bohai Sea.
The middle and upper reaches of the Yellow River are dominated by mountains, and the middle and lower reaches are dominated by plains and hills. Because the middle part of the river flows through the Loess Plateau of China, it carries a lot of sediment, so it is also known as the river with the largest sediment content in the world. However, in Chinese history, the diversion of the lower Yellow River has had a great impact on human civilization. The Yellow River is the main birthplace of Chinese civilization. China calls it the mother river.