Which city is the upper reaches of the Han River divided into?

The Hanjiang River, also known as Hanshui River and Hanjiang River, is the largest tributary of the Yangtze River. According to modern hydrology, there are three sources: Shui Yang in the Central Plains, Qushui in Beiyuan and Daiyu River in Nanyuan, all of which are located in ningqiang county, Shaanxi Province at the southern foot of Qinling Mountains. When it flows through Mianxian (now Mianxian) and flows eastward to Hanzhong, it is called Hanshui River. The section from Ankang to Danjiangkou was called Canglang Water in ancient times, and Xiangyang was nicknamed Xiangjiang River and Xiangshui below.

Hanjiang River is the longest tributary of the Yangtze River and occupies an important position in history. Often juxtaposed with the Yangtze River, Huaihe River and Yellow River, they are collectively called "Jianghuai Hehan".

The Hanjiang River flows through Shaanxi and Hubei provinces and joins the Yangtze River at Longwang Temple in Hankou, Wuhan. The river length 1.577 km, and the basin area 1.959 years ago was 1.743 million square km, ranking first among all the basins in the Yangtze River system. After 1959, it was reduced to159,000 square kilometers. The main stream is above Danjiangkou, Hubei, and the valley is narrow, about 925km long; Danjiangkou to Zhongxiang is the middle reaches, with a wide valley and many beaches, about 270km long; Zhongxiang to Hankou is the downstream, about 382km long, flowing through Jianghan Plain, and the river twists and turns gradually shrink.