Yang Jian, Emperor Wendi of Sui Dynasty, once built Quanfeng Palace here as a summer resort, and Xuanzong of Tang Dynasty visited it three times and named it Quanfeng Hall. There are three springs in Tangyu Hot Spring in Meixian County, with a daily inflow of more than 400 tons. The water temperature is often kept at about 60℃, and the water contains many elements such as potassium, sodium, magnesium, iron, calcium and iodine. Because of the high content of sodium sulfate, it is named "low mineralization weak alkaline sodium sulfate high hot spring" Through years of medical practice, it has been proved that Quanfeng water can promote the metabolism and sterilization of human tissues, and has a good effect on psoriasis, chronic eczema, neurodermatitis, chronic rheumatoid arthritis, internal rheumatoid arthritis, lumbar muscle strain and itching. At the same time, it also has a certain therapeutic effect on gastric ulcer, tracheitis, obesity, diabetes and cardiovascular diseases. Now there is a sanatorium in Phoenix Spring, which can be used by thousands of people to bathe every day, 100 people stay. In addition, Taibai Building, Quanfeng Hall and other buildings have been built, which is a real tourist attraction.