As for how the Ganjiang River got its name, there are mainly the Zhanggong Confluence Theory and the Gan Giant Theory.
1. The Zhanggong Confluence Theory is the most popular theory. Zhangshui and Gongshui merge into Ganjiang River in Ganzhou, and Zhangshui on the left and Gong on the right form the word "gan". The problem with this theory is that the word "gan" appeared before the Qin Dynasty, while the word "gan" appeared after the Tang Dynasty.
2. The Gan giant was first seen in "The Classic of Mountains and Seas: Hai Nei Jing": "There are Gan giants in the south, with human faces, long arms, black bodies and hairy heels." Guo Pu of Jin Dynasty annotated "The Classic of Mountains and Seas": "There are these things in the deep mountains of Nankang County, Jiaozhou today. They are about 10 feet long, with heels turned backwards. They walk well, are hairy, and are funny. The female can make juice. If it spills, the person will get sick. The local custom calls it Shandu. Nankang Today there is Gan River, so there is this person, so it is named after water."
Extended information
Gan River River Characteristics: Gan River is the first of the five rivers in the Poyang Lake Basin, starting from the south. It runs through the entire territory of Jiangxi in the north. The upper reaches of the Gan River are called Gongshui, originating from Shiliao in Shicheng County. The main river channel (main stream) to the mouth of Wuchengren Lake is 766 kilometers long, with a drainage area of ??83,500 square kilometers, accounting for 51.5% of the Poyang Lake drainage area.
In terms of basin area, it ranks seventh among the eight major tributaries of the Yangtze River. In terms of water volume, it ranks fourth after the Minjiang River, Xiangjiang River and Yuanjiang River. Its water production per unit area ranks first among the eight major tributaries. The Ganjiang River system has many tributaries. There are 125 main branches and tributaries with river lengths greater than 30 square kilometers. There are more than 2,000 rivers with catchment areas greater than 10 square kilometers, and 19 rivers with catchment areas greater than 1,000 square kilometers.
Baidu Encyclopedia-Ganjiang