Heart & Essence of Dan-Xi's Methods of Treatment

Zhu Dan-Xi, was the last of the four great masters of internal medicine during the Jin/Yuan dynasties. He is remembered today as the founder of the School of Enriching Yin. However, Zhu studied the theories and methods of the other three great schools before him and especially that of Li Dong-yuan.

Translators Preface
Preface to the Dan Xi Zhi Fa Xin Yao from the Gao Edition
Preface to the Republication of the Dan Xi Zhi Fa Xin Yao by Xiao Shu-lin