Liu Zhuang immortal online reading or

During the Wei and Jin Dynasties in China, there appeared an ideological trend of advocating Laozi and Zhuangzi, which generally referred to metaphysics in Wei and Jin Dynasties. The concept of "Xuan" was first seen in Laozi: "Xuan is mysterious and the door to all miracles." Wang Bi's "A Brief Introduction to Laozi" said: "The deep one is also deep." Metaphysics is a theory to study profound problems.