This is a discussion group for advanced pulse diagnosis and related topics. It is intended for practitioners and students who have attended the Advanced Pulse Diagnosis Seminars, and other parties interested in the Dong Han System of acupuncture and herbology. It is open to all practitioners.

All questions about pulse diagnosis, disease patterns, clinical histories, acupuncture strategies, etc. may be raised; but answers will be limited to the Dong Han system of pulse diagnosis and acupuncture.

Illustration: The eversion of a sphere. Yin and yang---the interior purple and exterior gold surfaces of the sphere---change places in 4 dimensions of space and time. The transformation starts at the top left corner and moves clockwise.

It is a 4-dimensional Taiji diagram. When the process gets to the midpoint, the figure can be cut in cross section to reveal the Bagua, an eight-sided figure. The Bagua lies on the most stable path through this process; hence its importance in Chinese medicine. It also illustrates several important ideas in the Dong Han pulse diagnosis system.