Li Dongyuan was a famous doctor during the Jin and Yuan dynasties. His Piwei Lun is a three-volume book, which mainly describes the changes of the function and reality of spleen and stomach and its connection with other viscera channels and collaterals. In the book, the spleen is an elevating hub. It can be use for Chinese medicinal materials of the Chinese medicinal material. The spleen is in the water, the water is in the water, the bladder is vaporized, and the water is good, an...