Ayi River, formerly known as Changxi River in Fenshui Township, Wuchuan County, Guizhou Province, meanders northeast into Pengshui County, Chongqing, passing through Changqiba, Zhouzituo, Sanjiangkou, and finally flowing into Wujiang River from Changxi Beach, Wanzu Township. Taking a boat down from Zhouzituo, you can see various canyon landforms along the way: there are
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