The much awaited 4th volume of Qi Development is now available! This is an exciting area covering many aspects and Qigong methods to develop the Qi and also give an insight in to how the highest level of Tai Chi is achieved. This series is a must for anyone who is trying to develop their full potential as either a martial artist or a healer. Erle carries on with the 12 Qi Development Tools and teaches numbers 7 to 12 so this volume takes you to the end this exciting area. from Wudang in this volume.