Why is eight hundred Li Guanzhong called Qinchuan?

Guanzhong area is called "eight hundred Li Qinchuan", which refers to an area where Weihe River impacts the plain at the northern foot of Qinling Mountains. Qinchuan in 800 Li mainly describes the fine weather here all year round. Because of the fertile soil, agriculture has been very developed since ancient times, which laid a material foundation for the prosperity of Qin, so it is also called "Qinchuan in 800 Li" and is the birthplace of Chinese civilization.

Guanzhong or Guanzhong Plain refers to the Weihe River alluvial plain at the northern foot of Qinling Mountains in Shaanxi, China, with an average elevation of about 500 meters. Also known as Guanzhong basin, the loess plateau in northern Shaanxi is in the north, and the mountains and Qinba mountains in southern Shaanxi are in the south. This is an area with developed industry and agriculture, dense population and rich land in Shaanxi, which is known as Qinchuan in 800 Li. The word "Guanzhong" was first put forward in Historical Records and then mentioned many times in the Biography of Qin Shihuang, which shows that the name "Guanzhong" was widely used in Qin Dynasty.