Nei Gong has been a well-kept secret within the Daoist sects of China for centuries. Based upon the original teachings of the great sage Laozi, it has only ever been taught to close students of the masters chosen as the heads of the ancient orders. For the first time in the English language, this book describes the philosophy, principles and practice of Nei Gong. The author provides a breakdown of the entire Nei Gong process, and explains in plain English the philosophy which underpins Nei Gong practice, and which is based on the original teachings of the ancient Daoist priests. The methodology of Sung breathing, an advanced meditative practice which has until now been reserved for 'inner-door' students is described, and the book contains an entire set of Qigong exercises accompanied by instructional photographs and drawings. This book will be of interest to all practitioners of Qi Gong, martial arts and meditation, and will be a rewarding read for anyone interested in Eastern philosophy.