"Four Great Physicians in the Jin and Yuan Dynasties”: ■Li Gao(Li Dongyuan):“School of strengthening the earth" "Internal damage of the spleen and stomach leads to hundreds of diseases." ■Zhu Danxi(Zhu Zhenheng):“School of nourishing yin'” "Yang is ever in excess while yin is ever in deficiency.”“Four Great Physicians in the Jin and Yuan Dynasties”: ◼ Li Gao (Li Dongyuan): “School of strengthening the earth” “Internal damage of the spleen and stomach leads to hundreds of diseases.” ◼ Zhu Danxi (Zhu Zhenheng): “School of nourishing yin” “Yang is ever in excess while yin is ever in deficiency