To age with the sun and moon and be renewed by spring and summer, to conserve the seeds of growth in autumn and winter and to be nourished by the eternal breath of the Tao-these are the goals of the Taoist alchemists, the masters of the arts of health, longevity, and immortality. This book is a translation of a concise Taoist alchemical manual known as the Dragon-Tiger Classic, along with its two most important commentaries. The classic, written in ancient times by an unknown author and publis