Introduction to Jade Chan Palace: Bai Yuchan, formerly known as Ge Changgeng, was a master figure of the Southern Taoist Sect in the Song Dynasty and one of the Five Southern Ancestors. It is said that once upon a time, his mother dreamed of eating something like a toad and she realized she was pregnant. Therefore, after Chang Geng debuted, he changed his name to "White Jade Toad" in response to the dream. The main achievement of Bai Yuchan's life lies in his contribution to Taoism. He is a pivotal figure in the history of the development of Taoism in China. He broke the pattern of secret teaching of the Southern Taoism in the Taoist organization, allowing Taoism to blend into the secular world and reach out to the people; he also promoted Taoism from refining elixirs in furnaces to cultivating the essence, qi, and spirit of the human body, absorbing the essence of heaven and earth, and eating food. Herbal medicines nourish the body and prolong life.