Ancient metaphysics is the study and explanation of Laozi, Zhuangzi and Zhouyi. Produced in the Wei and Jin Dynasties. It is the main philosophical trend of thought in Wei and Jin Dynasties, and it is a philosophical and cultural trend of thought produced by the integration of Taoism and Confucianism. It is an expression of Taoism. It can be said that metaphysics is a branch or improvement of Taoism. The word "Xuan" comes from Laozi's Tao Te Ching, which is a "mysterious and mysterious, wonderful door" with profound and subtle words. From the end of the Eastern Han Dynasty to the Jin Dynasty, it was more than 200 years of troubled times, and the Ming-Jiao orthodox Confucianism, which ruled the ideological circle for nearly 400 years, began to lose its charm. Scholars are generally tired of the tedious Confucian classics and the platitudes of the three cardinal guides and the five permanent members in the Han Dynasty, so they turn to looking for new and metaphysical philosophical arguments. In Wei and Jin Dynasties, the meaning of metaphysics refers to both words and deeds, and most of them are profound. "Xuanyuan" refers to the ontological problem of "transcending words and images" and staying away from concrete things. Therefore, emptiness, metaphysics and knowledge of metaphysics can be called metaphysics. Metaphysics scholars are mostly celebrities at that time. The main representatives are Yanhe, Wang Bi, Ruan Ji, Ji Kang, Xiang Xiu and Guo Xiang. Based on the decline of Confucianism (Confucian classics) in Han Dynasty, it was produced to make up for the deficiency of Confucianism. It evolved from Taoism and Huang Lao's theory in Han Dynasty. Wei Jin people attached great importance to Laozi, Zhuangzi and Yijing, and called them "San Xuan". The main representatives of metaphysics in Wei and Jin Dynasties are Yanhe, Wang Bi, Ruan Ji, Ji Kang, Xiang Xiu and Guo Xiang. The emergence of metaphysics in Wei and Jin Dynasties has its profound social background and ideological and cultural background. In short, it came into being on the basis of the decline of Confucianism in the Han Dynasty to make up for the deficiency of Confucianism. It evolved from Taoism and the theory of Huang Lao in Han Dynasty. It is the product of the direct evolution of Wei Chu dialect in the late Han Dynasty. Li Er (about 57 1 ~ 47 1), Bo Yang, also known as Lao Dan (dān), is one of the greatest philosophers in ancient China and one of the standard theorists who miss Lao Zi. He is the founder of Taoist school and a world cultural celebrity. Promise is Tao, which is more primitive and ultimate than Tai Chi: Promise is the ultimate realm that Laozi once admired. This is the first time that the concept of infinity has appeared. Although you know white, you are content with darkness, and you can be a model for the world. Can be a model of the world, eternal virtue remains unchanged, and sex belongs to infinity. So the original meaning of infinity is Tao, and Tao is endless. In this sense, people in later generations used the concept of infinity, but the emphasis was slightly different on different occasions. Zhuangzi said in "Happy Travel" that "beyond the infinite, there is no infinite." It means that the world is boundless, beyond the infinite, or infinite. Infinity is infinity. Lao Zhangzi, a river official in the Han Dynasty, believes that returning to infinity is a long-term vision. According to the Taoist concept, we can live long and see, so it is consistent to interpret infinity as Tao or long-term vision. Tao is infinite. Before the creation of heaven and earth, it has existed for infinite time and will exist forever. It is also infinite in space, not limited to any specific area. Therefore, it is known as an infinite category. In the perspective of the evolution of the universe, the word "infinity" is often used in contrast to Taiji, which refers to an older and more ultimate stage than the chaos that heaven and earth have not been created, but is directly triggered by heaven and earth. This stage is the Tao. Therefore, infinity is the foundation of Tai Chi. Monks all pursue the unity with Tao, which, in Taoist terms, means the realization of Tao. In the concrete mechanism, it is to return to the ultimate state in the early Yuan Dynasty, which is called returning to infinity. Thanks for watching,