Taiji Evolutionism holds that what we call abstract things are abstract things in people's minds. Therefore, abstract essence is imagined by human beings, it is abstract generalization of various phenomena. Today's generalization is not the same as yesterday's generalization, so the essence changes. This should have been a simple matter, but since Hegel treated essence as an objective and real thing like an iron block, and it can change itself, so the change seemed mysterious, and the relationship between essence and phenomenon became complicated.

Hegel said,"The essence is not behind or outside the phenomenon, it is in the phenomenon, is that which is manifested as the phenomenon." At the same time, he said, "To regard the intuitive material as all true confuses the distinction between essence and appearance." Hegel's claims were so contradictory that he could only deal with them with mystical Dialectics, and could not really solve the contradictions. Hegel said: "Essentialism is the most difficult part of logic." [5] Marx considered Hegel's Dialectics to be headstand, but Marx still regarded essence and objective law as the existence of objective reality, rather than as the existence in human mind. Hegel babbled on about essence in a complex and mysterious way. In fact, as long as we had regarded essence as our own generalization of phenomena, as stable subjective existence in the mind, it would have been neither complicated nor mysterious.

5. Neo-Essentialism

5.1 Anti-Essentialism in Modern Philosophy

The building of classical Western philosophy takes Metaphysics and Essentialism as the main body, and German classical philosophy is the peak of its development. Later Western philosophy resembled late Greco-Roman philosophy, tinkering within classical Metaphysics. However, even at the height of Hegel's philosophy, Kierkegaard had begun to challenge Hegel and his Essentialism. By the end of the 19th century, the movement of "Overcome Metaphysics" represented by Nietzsche occupied almost half of the philosophical stage. In the 20th century, Anti-essentialism gradually replaced classical Metaphysics and Essentialism and became the mainstream of Western philosophy. Postmodernism and Deconstruction were more thorough in overcoming Metaphysics. Thus, Western philosophy once again entered the "intermission" state. But the defeat of Essentialism does not mean the bankruptcy of philosophy. On the contrary, Anti-essentialism enriched philosophical thought, on which a new Metaphysics and New Essentialism can be built.

5.2 What is Neo-Essentialism

The Ontology of Taiji Evolutionism is Dialectical Dualism. The Essentialism in Dialectical Dualism holds that philosophy needs to research many abstract things such as Origin, Noumenon, laws and concepts, while science also needs to research abstract things such as laws and concepts, which are all essences. However, these essences are different from those of traditional Essentialism. These essences do not belong to the objective world, but only exist in the subjective world. Theories such as Objective Idealism and Realism belong to traditional Essentialism. They believe that essence is the real thing in the objective world. The Essentialism in Dialectical Dualism holds that the essence in the objective world has no value, while the essence in the subjective world has high value and is the main contents of human civilization and culture. The main task of philosophical Ontology is to create the essence in the subjective world, including the Origin, Noumenon, laws, concepts, commonalities, world views and so on. This is the Neo-essentialism.