Three-eye wells in Yunnan are very common, whether it is the ancient city of Lijiang or Shuhe. Third, the eye well contains the wisdom of the ancient working people, one used to wash rice and one used to drink water, and one used to wash clothes. According to the cleanliness of the water, it is divided into three levels. I did not expect that the water is still used in this way. I saw the local residents in the three-eye well to get water for daily life.