 TCM is widely used in China and it is also used in the West.Its philosophy is based on Yinyangism (i.e., the combination of Five Phases theory with Yin–Yang theory), which was later absorbed by Daoism.Philosophical texts influenced TCM, mostly by being grounded in the same theories of "qi, yin-yang" and "wuxing" and microcosm-macrocosm analogies.