Explaining the process & energetics of Daoist internal alchemy the author describes in detail the practice of Nei Dan the alchemical firing practice of Daoism that has until very recently been a closely guarded secret Drawing together a huge amount of esoteric material on the hidden aspects of Daoist practice he presents theory & practice coherently for western practitioners He offers his own experiences of each stage of attainment describing the tangible results that should appear & provides guidance on the practicalities & potential pitfalls of alchemical training