Shuhe Ancient Town is known as the "Pearl on the Tea Horse Ancient Road", and all the streams in the ancient town come from "Jiuding Longtan". Not far from Longtan, there is a "three-eyed well", which is the source of the life of the town's residents. The so-called "three-eye well", that is, when the well is built, the direction of the stream, from top to bottom, the water of the well is used for drinking, washing vegetables and washing. This not only ensures drinking hygiene, but also saves water resources. A wooden sign next to the well is striking, which reads: "Water is good and all things are not disputed." Water is the scarce resource that is most easily polluted. In the nomadic era, Naxi's ancestors "lived by water and grass", and regarded water as the source of life; in the era of farming and settlement, they brought water into the village and divided it into three. Enjoy the comfort and convenience of living in the water; to the age of the town, the "three-eye well" culture was created: a spring water for three pond well water, the first eye for drinking water; the second eye for washing vegetables; the third eye for washing water. One water and three uses, without competing or grabbing, reflects the Naxi people's awe of nature, We cherish the good traditions of the environment.”