Li Tung-yun [Li Dongyuan, also known as Li Gao; 1180-1252
A.D.] - Li is best known for his thesis that most diseases were
due to injury to the stomach/spleen system, which occured as the
result of intemperance in eating and drinking, overwork, and the
seven emotions. His well-known book Pi Wei Lun (Treatise on the
Stomach and Spleen) presented one of the most widely used traditional
formulas: Ginseng and Astragalus Combination (Buzhong Yiqi Tang).