Hedong in Changsha refers to the regional division with Xiangjiang River as the boundary. East of Xiangjiang River is Hedong, and west of Xiangjiang River is Hexi. In Changsha, the main stream of Xiangjiang River flows from Zhaoshan in Xiangtan County to the southwest border of Changsha County, and enters the suburbs of Changsha through Jiuqu Yellow River, Muyun City and Dongyao Port. In Changsha county, the flow rate is 10.5km .. and then it runs through the urban area from south to north, and exits at the Qiaokou of Wangcheng county. The length of crossing the city is 74 kilometers, during which 15 tributaries flow into Xiangjiang River, among which Liuyang River, Laodao River, Jinjiang River and Weishui River are the larger tributaries.

Xiangjiang River is the largest river in Hunan Province. There are four explanations for its source: First, the traditional Zhengyuan (commonly known as Dongyuan) is a stone ladder in Baishi Township, Xing 'an City, Guangxi Zhuang Autonomous Region. Its source is Dayang River, which flows northward into Xing 'an Branch Reservoir and flows into Lingqu, which is called Xiangjiang River; Second, Nanyuan, Longmen Boundary, Haiyang Town, lingchuan county City, Guangxi Zhuang Autonomous Region; Third, the ocean mountain range in Baishi Township, southern Xing 'an, Guangxi, is near Fengling, where the source is called Upper Gui Jiang (Baishi River) and flows eastward to Xibo Estuary as Xiangjiang River; The fourth is Yegouling in Lanshan National Forest Park, Liangziyao Township, Lanshan County, Yongzhou City, Hunan Province. The source of Wild Dog Ridge is Xiaoshui, which meets the water from Guangxi in Pingdao, Yongzhou City, and is called Xiangjiang River. The popular saying in academic circles is the source of Baishi River. It flows through Yongzhou City, Hengyang City, Zhuzhou City, Xiangtan City and Changsha City in Hunan Province and flows into Dongting Lake of the Yangtze River system in Xiangyin County, Yueyang City. If Haiyang River is taken as the source, the main stream of Xiangjiang River is 844 kilometers long and the drainage area is 94,660 square kilometers.