But the origin of the school came mainly form the ideas of Lao Zi and Chuang Chou, such as advocating to follow the law of nature, to moderate one's desire and lust in order to longevity. Guo Hong, a famous philosopher and physician, summarized a lot of theories and practices which were used by Taoists and physician in Bao Pu Zi published in the 3rd century. He developed a series of theories and methods how to longevity. Gou's ideas had greatly impact on traditional Chinese medicine. First, Taoism held that health depended on the maintain of the natural instincts of human being.
Diseases are due to bad or immoral life-style and behaviors.
And the life-style in accordance with the morality and nature can be benefit for peoples' health. Second, Taoism was desirous of longevity and loath to death. Taoists developed a set of techniques of prolonging life in order to achieve the goal of immortality for the physical form of existence which shows the love of life. Lastly, Taoism claimed that sexuality was necessary for person's health, but it should be moderated, if not, it should be harmful to individual. So a variety of sexual techniques were developed for maintaining males' essence and longevity.