Book excerpt: The teaching and practices of the ancient Daoist tradition of Da Xuan have been kept secret for generations. In this ground-breaking book, Serge Augier, the current inheritor of the Da Xuan system, presents this unique approach to Daoism and reveals the basic principles and theory behind the practice of Da Xuan. Weaving a masterful presentation of both astonishing depth and refreshing simplicity, Serge Augier covers the Daoist practices for developing mind, emotions and internal energy and provides specific exercises for cultivating and transforming the Jing (body energy), Qi (life force) and Shen (mind or spirit) on the path to enlightenment. He explains theory and practice in clear, easy-to-understand terms and explores the deeper reaches of Daoist internal alchemy in a way that gives access to practitioners of all levels to the necessary knowledge.