What is the meaning of "Shenhuo Day" in metaphysics?

Meaning: The midday sun is extremely powerful and irreversible.

Metaphysics, also known as Neo-Taoism, is the study and explanation of Laozi, Zhuangzi and Zhouyi. Produced in the Wei and Jin Dynasties. It is an ideological trend of advocating Lao Zi and Zhuang Zi that appeared in the Wei and Jin Dynasties in China. It is different from the so-called metaphysics and metaphysics. The concept of "Xuan" first appeared in Laozi: "Xuan is both mysterious and mysterious, and it is the door of all miracles." Yang Xiong also talked about Xuan. He is "too mysterious? Xu Anbi said: "The mysterious are all kinds of recluses, and so are the invisible." Wang Bi's "A Brief Introduction to Laozi" said: "Profound people are profound. "Metaphysics is a theory that studies profound and profound problems. During the Wei and Jin Dynasties, people paid attention to Laozi, Zhuangzi and Zhouyi and called them "San Xuan", while Laozi and Zhuangzi were regarded as "Xuanzong". The main representatives of metaphysics in Wei and Jin Dynasties are Yanhe, Wang Bi, Ruan Ji, Ji Kang, Xiang Xiu and Guo Xiang.