Tai Chi

refers to the initial unity of the universe. Kong Yingda, an economist at the beginning of Tang Dynasty, mentioned in Zhou Yi justice: "Taiji means that before the heaven and earth were separated, the vitality was mixed into one." "Yi Wei · dry chisel degree" thinks that "tangible is born in the invisible" and proposes four stages to explain "Yi has tai chi": "There is too easy, there is too early, there is too beginning, there is too simple". It is too easy to see Qi, the beginning of Qi is too early, the beginning of shape is too early, and the beginning of quality is too simple. The state in which gas is mixed and unseparated is called chaos. Chaos is what the ancients said. Taking the undivided state of vitality as Tai Chi, bin took the meaning of its original material. This view is more common in the Han Dynasty, such as Liu Wei: "The central vitality of Tai Chi"; Wang Chong quoted Yi scholar's words: "The vitality is not divided, chaos is one". Zheng Xuan explained tai chi with "the qi of Chun he was not divided.