On the Relations Between Cheng Yi's Theory of "the Principle of Heaven" and Taoism

The paper dwells on three meanings of Lao Zi's Taoism, among which only was accepted by Cheng Yi, who insisted that noumenon and origin of universe was not emptiness but objective principle of heaven. Although Cheng Yi's Taoism was very different from that of Taoism, his theory of the Priciple of Heaven absorbed a great deal of thinking indicated in ontology, theory of origin and natural theory of Taoism.