Evolution of concept of'Buzhong Yiqi'and reflections on it
This paper sorted out the drugs that had the effect of Buzhong Yiqi before the Jin and Yuan dynasties,and compared with the Chinese Pharmacopoeia(2020 edition),found that the concept had changed from broad sense of deficiency supplementation to strengthening the qi of spleen and stomach.The turning point was the creation of Buzhong Yiqi Decoction.Then,by studying the original intention of LI Dongyuan's founding of Buzhong Yiqi Decoction and the studies on the correspondence of prescription and syndrome of the formula,it is found that there are differences in the application between ancient and modern times,which is also based on the different understanding of'Buzhong Yiqi'.This phenomenon is the evidence that'incommensurability'exists within TCM theory.Therefore,in order to correctly understand and apply TCM theory,herbs and prescriptions,it is suggested to interpret concepts according to their different contexts,rather than relying on literal meanings.
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