Introduction to Wu Yunchu: It is said that after Wu Yunchu resigned from office, he took his family to practice Taoism here. Ten years later, his family became immortals and ascended to heaven. After the incident reached the ears of Emperor Xuanzong of the Tang Dynasty, officials were sent to worship him. Wu Yunchu entrusted this official with a dream, saying that he was in charge of life and death in the world, and asked the emperor to build a temple for him, and then the Biao Yu Temple was built.