Yoshio Manaka was a poet, artist, scholar, physician, and healer. He lived for and was inspired by ideal and invention. At the pinnacle of his life he reached a level of healing skill that only those who have invited many years of practices, researches, and study an achieve. Yet he sought not accolades, but hopeless and puzzling medical cases. He was not content with fame but sought bring young idealists to challenge and inspire.

His transformation of Ease Asia traditional medical theory into a rational scientific model established the foundation for a new explanation of acupuncture, the X-signal system. It explains and explores both traditional and modern theories without trivializing either. He based very aspect of his model on clinical tests, observation, and years of successful clinical practice, both his own and that of a network of skillful and dedicated healers.

Chasing the Dragon's Tail assembles the elements of that model, beginning with a clear exploration of the observational evidence. It organizes and presents Manaka's experiences and clinical findings, explaining each of the many levels. The system of theoretical explanation and clinical practice he evolved is detailed step-by-step with illustrations and instructions. Manaka's system is proven and practical, and is based on tests and observations every practitioner may confirm for themselves. It is an invitation not only to a new and dynamic understanding of acupuncture but to a new levels of clinical skill.