西江
The basin of the Xi River ranges from eastern Yunnan Province to southern Guangdong Province with a humid subtropical or tropical monsoon climate. The Xi River is navigable for its entire length. It is a commercial waterway of southern China, and links the delta cities to the interior. Over two thousand years ago, the Lingqu Canal was dug, connecting the Xi River basin (the Li River, which is a tributary of the Gui River) with the Xiang River, which flows into the Yangtze, thus providing a continuous waterway from the Pearl River Delta to the Yangtze Valley. The Xi River is rich in water conservancy and water resources, providing significant contributions to agricultural irrigation, river transportation, and power generation in coastal areas.