In 747 AD, during the sixth year of Tianbao in Emperor Xuanzong of the Tang Dynasty, the "Huotong Cave" in Ningde was named as the first cave, ranking before the Five Mountains. Sima Chengzhen, a scholar on the First Avenue of Emperor Xuanzong of the Tang Dynasty, said in the Map of Heaven and Earth Palace: "Thirty-six caves are among the famous mountains and are also ruled by immortals." The author's textual research: the status of Huotong's first cave is due to both natural ecology and historical, political and cultural reasons. The natural ecological reasons are mainly due to the unique nature of Huotong Mountain and Huotong River. Like Jiufeng Mountain, there are Huotong in the east and Wuyi in the west. Ninety-nine Peak is shaped like a lotus, with high mountains and low streams, and faces the sea. It is a natural paradise of Buddhism and Taoism. In particular, the Zizhi Peak in Huotong Mountain is rich in Ganoderma lucidum, which is a unique raw material for Taoist alchemy. Other caves are not as good as it. Moreover, Huotong is a secluded place for doctors in the Sui Dynasty. Since ancient times, it has been a thousand-year-old town with profound cultural heritage and livable Taoyuan customs. The historical, political and cultural reasons are mainly due to the fact that the court advocated Taoism from Kaiyuan to Tianbao in the prosperous Tang Dynasty, and Li Longji and Yang Yuhuan, a loving old couple, sought elixir for long-term happiness. Tang Xuanzong's harem has a high status of love (Yang Guifei is Taoist, Taoist, Taoist, Taoist, Taoist, Taoist, Taoist, Taoist, Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Taoist Historical changes, the Anshi rebellion, the Tang Dynasty from prosperity to decline, Tang Xuanzong lost Yang Guifei, surrendered the imperial power and became the emperor's father. The position of Taoism in the palace has been affected. The mission of Huo Tongshan, the first Taoist priest in Sima Cheng Town, to make an alchemy for the palace soon ran aground, and then he turned to Wuwangshan, the birthplace of Xiuzhen, to continue to repair the truth, and the historical ranking of Huo Tongshan's first hole was frozen.