Xiang River
The Laodao River (), also known as the Laotang River () or Liaoxu River (), is a right-bank tributary of the Xiang River, the 2nd largest tributary of Xiang River in Changsha, Hunan Province, China. The river has a length of with its drainage area of , accounting for 21.52% of the total area of Changsha, with surface water resources of 2,262 million cubic meters, accounting for 20.62% of that (as of 2014). It flows through Liuyang City, Changsha County, Furong and Kaifu Districts, and merges into Xiang River at Jiangwan () of Xiufeng Subdistrict, Kaifu District.