Introduction to Cuidi: Cuidi was built in the early 1960s to prevent lake water from rising and block floods. It is 4,000 meters long and has more than 20,000 poplar trees planted, forming a dense forest corridor in the scenic area. The temperature in the forest in midsummer is 5 times lower than normal temperature. -7℃, known as a natural oxygen bar, it is a good place for people to cool off in summer.