In the eastern Han dynasty, "his wandering heart did not exceed the number of images." The discussion of metaphysics is different, while the Wei and Jin dynasties "studied ontology from the perspective of heaven" and then discussed the ontology of the universe from the theory of universe generation. " Fu Xuan scholars are the noumenon of learning, and they are the difference between background and absence. There is no difference, the meaning of the group is different. Learning, such as what worship is, will sink into all the sights and sounds, and the clear will often flow with what it is. Learning expensive lingers in the metaphysical realm, while what you see tends to be really quiet.

Three or six is nine, which is an extreme number.