Zhang Yuansu 张亓素 (a.k.a. Zhang Jiegu; ca. 1151–1234) was one of the most historically influential Traditional Chinese medicine physicians in the period of transition from China's northern Jin dynasty to the Mongolian

Yuan dynasty The Yuan dynasty (), officially the Great Yuan (; xng, , , literally "Great Yuan State"), was a Mongol-led imperial dynasty of China and a successor state to the Mongol Empire after its division. It was established by Kublai, the fift ...

.THE JIN-YUAN MEDICAL REFORMS, Subhuti Dharmananda, Institute for Traditional Medicine Zhang Jiegu integrated medicinal materials into the five element framework ( Wuxing) with both the five shen herbs (spirit herbs) framework and qi meridians. He helped to more clearly define the association of the "tastes" of medicinals and their believed effect on the different organ systems. Zhang asserted that herbs entered into and influenced the meridians. The culmination of Zhang's work was a book called '' Bag of Pearls'' (''Zhenzhu Nang'' 珍珠囊). According to Zhang Jiegu:

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{{DEFAULTSORT:Zhang, Yuansu 1150s births 1234 deaths Jin dynasty (1115–1234) writers 13th-century Chinese physicians Writers from Baoding Physicians from Hebei Chinese non-fiction writers 12th-century Chinese physicians