Jiulongtan Natural Scenic Spot is located in the south of Xinglong County. It is divided into odd, three gorges, nine pools and eight major scenic spots, with more than 50 scenic spots. The well-known Taiji Bagua well is 8.6 meters deep and has no water. It is a wonder in Kowloon. In severe winter, the well is hot as steaming; in hot summer, the well freezes and freezes. This well is different from ice and carbon in that it melts Yin and Yang and can accommodate water and fire. Winter is warm, summer is cold, and the earth's veins are spiritual and unpredictable. So it is called Taiji Bagua Well.