Under an allusive poetical language and thick layers of images and symbols, The Seal of the Unity of the Three ( Cantong qi ) hides the exposition of the teachings that gave birth to Taoist Internal Alchemy, or Neidan.
Traditionally attributed to Wei Boyang and dated to about 150 CE, The Seal of the Unity of the Three is concerned with three major subjects - Taoism (the way of "non-doing"), Cosmology (the system of the Book of Changes ), and Alchemy - and joins t.
Under an allusive poetical language and thick layers of images and symbols, The Seal of the Unity of the Three ( Cantong qi ) hides the exposition of the teachings that gave birth to Taoist Internal Alchemy, or Neidan