The holiday on November is very short, and the trip to Yunnan is over, and it can be said that it has been full of harvest.

Our group stepped on the train back to Beijing, and only Nanli was preoccupied.

I leaned against the window of the car and squinted, playing with the Tai Chi stone in my hand, and a voice always lingered in my ears--- Yin Yang Fish.

In Lao Tzu, it is recorded that the yin-yang fish refers to the middle part of the Taiji diagram, which is called "the first diagram in China". This well-known Taiji diagram is shaped like two fish of yin and yang entangled with each other, so it is commonly known as "yin and yang fish taiji diagram". All things are negative yin and embrace yang, and they are impulsive and peaceful. This is the best and most quintessential interpretation of Taijitu.

The Taiji diagram is known as the "first diagram in China". From the pillars of the Dacheng Hall of the Confucian Temple, to the markers of the Laozilou Guantai, Sanmao Palace and Baiyun Temple, from the Taoist robes of Taoist priests to the fortune tellers' hexagram stalls, from the covers of books and periodicals of traditional Chinese medicine, qigong, martial arts and traditional Chinese culture, the emblem and monogram, to the South Korean flag pattern, the Singapore Air Force aircraft emblem, and the Bohr Medal family emblem...... And so on, the Taiji diagram all jumped on it. This well-known Taiji diagram is shaped like two fish of yin and yang entangled with each other, so it is commonly known as "yin and yang fish taiji diagram".

Since the "Taijitu" has been popular for so long and so widely, it is natural that the question of its origin and rheology has become the focus of people's interest. Before examining its origins, it is necessary to clarify the relationship between the name of the "Taiji Diagram" and the figure. There are two situations here, one is the same name, but refers to different figures, in addition to the Yin and Yang fish figures, there are five layers of figures, hollow circle figures, black and white semi-circle figures, etc., which are called "Taiji Diagrams", such as the Yin and Yang Fish "Taiji Diagram", which were called "Congenital Diagrams", "River Diagrams", "Congenital Natural River Diagrams", "Congenital Natural Diagrams", "Ancient Taiji Diagrams", etc., and the five-layer "Taiji Diagrams" are also called "Wuji Diagrams", "Taiji Shun and Reverse Diagrams", "Tai Chi Shunsheng Diagrams", and "Dan Dao Reverse Life Diagrams". This article only examines the Taiji diagram of the yin-yang fish, and the research on the five-layer Taiji diagram will be written separately.

In modern times, many people believe that the Taiji diagram originated in primitive times, and some people even believe that it is a gift from aliens to the earthlings during the primeval flood, or the only token left over from the destruction of the last or even two or three civilizations before this human civilization. Mr. Chen Lifu believes: "The ancient Taiji diagrams unearthed in the mainland are three or four thousand years earlier than the books of Zhou Yi and Qianchidu. For example, the ancient Taiji diagram of Shuanglong on the amphora painted pottery pot of the Fuxi era unearthed by Yongmoyun Taijijing in Shaanxi Province was painted with the center of the brush, which was 4,000 years earlier than Confucius. A number of bronzes from the Shang Dynasty and the Western Zhou Dynasty were also unearthed, and there was also a Taiji diagram of male and female dragons intertwined with each other. Mr. Chen refers to the diagram of the two dragons intertwined directly as the "double dragon Taiji diagram". In addition, some people believe that the Taiji diagram comes from symbols, double fish pattern graphics, and double phoenix pattern graphics, and some people claim that the Taiji diagram comes from the "vortex" formed after the confluence of the Yellow River and Luoshu under the Luoyou Fuxi platform in Henan.

Thinking of this, I not only nodded slightly, but also muttered to myself: "It seems that these patterns in the primitive era are nothing more than the ideological origin of the Taiji Diagram. ”

There are about three "Yi Congenital Diagrams" mentioned in "Yi Xuan": one is the innate square diagram, one is the innate circle diagram, and the other is the square and circle diagram.

Yi Fangyuan is a one-in-one diagram. Volume 1: "Yi Fangyuan two diagrams, heaven and earth are also used for the body." "The one who covers the change, the number of heaven and earth, the two diagrams of the square and the circle are combined into one, and the circle is wrapped in the square, the earth is in the sky, and the celestial phenomena are also." Volume 7: "The one who is easy to figure out the square and the circle is one, the earth is in the sky, and the heavens are also in the sky." This diagram is the orientation map of Shao Yong's 64 hexagrams, which is also contained in the frontispiece of Zhu Xi's "Zhou Yi Benyi".

Innate square diagram. Volume 1: "The innate square map, the northwest of the Qian, the southeast of the Kun, and the ...... of the Tianmen and the earth" Volume 9: "The innate square map changes from the earth, then one hexagram is biased towards the eight trigrams, which is sixty-four hexagrams." This diagram is the square diagram in Shao Yong's innate orientation map, which represents the earth surrounded by the sky.

Innate circle chart. Volume 1: "The circle of Yi, from one yin and one yang to two, from the outside to the inside." Zhang Xingcheng seems to have a soft spot for this picture, and often calls it a "congenital picture". For example, Volume 10: "The innate diagram is combined into one day." "Those who go on the right side of the innate diagram will be angry with each other, and those who are on the left will be able to change their qi with their creatures. The way of heaven and earth, adversity is self-generated, good times are born of people, and the principle of loyalty and forgiveness is also. ...'The congenital image is round, and the heaven is in oneness.' ”

It makes perfect sense to add a "yin and yang fish" figure in the middle of the innate circle chart. The shape of the "Yin and Yang Fish" is a visual illustration of the 64 hexagrams. In addition to the above quotations, Juan 10 also says: "Yi Xiantian Diagram is the image of Yin and Yang, which is the image of Yin and Yang, and the image of Yin and Yang is on the right side of the upper and lower lines, and the image of Yin and Yang is on the left side of the upper and lower lines, and is listed on the second side." Aren't the left and right lines of the "Yin Yang Fish" the same as the left and right lines of the hexagram?" If "Listed in two" does not refer to yin and yang, the arrangement of black and white, then what does it mean?

In another monograph, "Easy to Change", Zhang Xingcheng contains 14 diagrams, of which the first diagram is "there is a pole diagram", and "there is a pole diagram" is "innate diagram". This diagram is actually a square and circle diagram. The explanation of the circle chart can be seen to see the meaning of the "yin and yang fish" chart. "Tai Chi contains all things, thinking that there is but not seeing, and thinking that there is nothing but fixing it. ...... The image of heaven and earth has been in the midst of chaos, and so is the whole of Taiji. "Those who walk on the right side of the circle chart have no hexagram in the six changes, and those who go on the left side have one hexagram in the five changes." "The innate diagram from one yin and one yang to six changes as to thirty-two, is one of the soft and one rigid for the earth, the relapse generation of Qiankun as the parents, the rigid and soft inheritance of yin and yang to become a change, and the world's ability is complete. The arrangement of the 64 hexagrams is explained by the change of yin and yang, and the figure of "yin and yang fish" just reflects this change of hexagram accurately and vividly.

In the "Yin and Yang Fish" graphic, the left row of the "White Fish" in the upper right is from large to small, in order of dry, due, detached, and shock, indicating that the yang is gradually decreasing, and the right row of the lower left "Black Fish" is from large to small, in order of Kun, Gen, Kan, and Xun, indicating that the Yin is gradually decreasing. While the yang line decreases, the yin line increases, and while the yin line decreases, the yang line increases, so it is expressed by "black and white fish" intersecting each other. The two "fish eyes" represent yin in yang and yang in yin, where the "black eye" in "white fish" indicates the separation hexagram, and the "white eye" in "black fish" represents the kan hexagram.