Here is a classic Chinese text on the Taoist arts of Longevity and immortality.
This text focuses on Taoist inner alchemy, a theory and method for transforming the mind from within by using practices such as breath control, calisthenics, meditation practices, and sexual alchemy (the method of gathering energy from a sexual p.
E.) and is attributed to Chungli Ch\'uan and L Tung-pin--two of the most popular figures of Taoism and Chinese culture.
The text dates from the Five Dynasties (907-960 C.
Here is a classic Chinese text on the Taoist arts of Longevity and immortality