Lays the foundation for the elevation of the Spleen and Stomach as the postnatal root of qi and blood production * Introduced the concept of yin fire helping explain the causes and progression of a host of complicated diseases, such as AIDS, SLE, MS, CFIDS, and many cancers * Utilizes theory of stems and branches to clarify disease processes at work as well as modify prescriptions so as to take into account both weather and astrological influences * Essential reading for those who wish to go deep into TCM theory and also treat complex, recalcitrant diseases