This book presents a full examination of the eight extraordinary meridians from the texts of the Neijing (The Yellow Emperor's Inner Classic), the Nanjing (The Classic of Difficult Issues), and their commentaries. The first section gives an overview of the eight as showing the basic interaction of yin and yang within the body, as providing the foundation for the movement of qi and as being the underlying framework for the main meridian system. There follows a detailed description of the du mai, the governor vessel, with a study of the point names as a key to its functions. The ren mai, chong mai and dai mai are then covered, building up a simple structural picture of the body which is further elaborated in presentations of the qiao and wei mai. Each Chinese meridian name is discussed, looking at the etymology and nuances of meaning, and giving fresh insight into the function of these eight extraordinary meridians. Classical descriptions of points and pathways are explored in depth.