The religious consciousness during the Han Dynasty prepared the ideological conditions for the formation of Taoism. The alchemists combined Huang-Lao theory to create Huang-Lao Taoism. After the alchemists of the Eastern Han Dynasty became politically frustrated, they changed the direction of their activities. Some turned to the people, and some entered the mountains and forests. The alchemists gradually evolved into Taoist priests. For example, in "The Book of the Later Han·Biography of Hermits", there are mostly such characters. They are alchemists and hermits in the mountains and forests. Buddhism was introduced to China during the Han Dynasty and gradually became popular, which also promoted the founding process of Taoism.