The most impressive "Tai Chi Map" people have always seen is two black and white "Yin and Yang Fish". White fish means yang, while black fish means yin. There are black eyes in the middle of the white fish and white eyes in the middle of the black fish, indicating that there is yin in the yang and yang in the yin. Regarding the meaning of Taiji diagram, one thinks that Taiji refers to the primitive vitality of the universe. Another is "nothingness is Tai Chi." It is believed that "one" is Tai Chi, and this "one" is not a number, but "nothing". There is also a view that the mixture of yin and yang does not divide Tai Chi. "The yin and yang of heaven and earth, everything in ancient and modern times, will always be the principle of life and death, and Tai Chi is the best." Geng Xu believes that "Yi" is the sun and the moon, "Yi" is the yin and yang, and "Tai Chi Tu" is the symbol of "Yi"-the sun, the moon and the yin and yang. The sun and the moon represent yin and yang. On the basis of the infinite diagram, the "Taiji Diagram" evolved by dissolving the sun, the moon and Yin and Yang and replacing the "Yi" with symbols. "Boundless Map" is a Taoist practice of immortality, carved into a circle on the stone wall. The "infinite" circle is a sign that the yogi looks directly at meditation to meditate faster. Add the word "Yi" to the infinite circle, that is, draw the word "day and month" representing "Yi", which is Tai Chi. The word "sun and moon" in ancient times is slightly different from modern writing. In ancient Chinese, the word "sun and moon" is an O with a point in the middle, and the word "moon" is also a pictograph with a vertical point in the middle. The sun and moon are combined into one (infinity). Separating the word "moon" in ancient Chinese just forms an "S" shape. Half of the "sun and moon" in the circle (infinity), the point between the sun and the moon, is divided into black and white, and looks like two "fish" shapes. It means that "Yi" means the sun and the moon; "Yi" means Yin and Yang. The graphic change of "Yi"-from "Wuji" to "Taiji"-is an infinite circle filled with the words "Sun and Moon", which is a Taiji pattern representing the yin and yang mechanism of "Yi".