But do yin-yang fish really exist in Taiji diagram?

It's called yin-yang fish. From the beams and columns of Dacheng Hall of Confucius Temple to the landmarks of Louguantai, Sanmao Palace and Baiyun Temple; From cassock to fortune teller's divination booth; From the book covers and emblems of Chinese medicine, Qigong, martial arts and China traditional culture, to the Korean flag pattern, the Singapore Air Force machine emblem, the Boer Medal family emblem, etc., Tai Chi pictures are vividly displayed. This well-known Tai Chi map is called "Tai Chi Map of Yin and Yang Fish" because it looks like a combination of Yin and Yang fish. From the beams and columns of Dacheng Hall of Confucius Temple to the landmarks of Louguantai, Sanmao Palace and Baiyun Temple; From cassock to fortune teller's divination booth; From the book covers and emblems of Chinese medicine, Qigong, martial arts and China traditional culture, to the Korean flag pattern, the Singapore Air Force machine emblem, the Boer Medal family emblem, etc., Tai Chi pictures are vividly displayed. This well-known Tai Chi map is called "Tai Chi Map of Yin and Yang Fish" because it looks like a combination of Yin and Yang fish.

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"A Brief Map of Fire and Water" or "Three Five Essentials" are also worth analyzing. The last two pictures are handed down by Xiao Peng in the Five Dynasties to explain the Book of Changes. However, after checking the orthodox Taoist scriptures, Xiao Peng did not have these two pictures in the Book of Changes, but only a "mirror image". (Of course, it is not excluded that other lost versions include these two pictures. ) To say the least, even if Xiao Peng made these two pictures or even if they are in the "participation contract", it can't be concluded that they are the source of Taiji pictures. For the same reason. From the graphics of these two pictures, we can't see the traces of Taiji, but they have ideological origins. The first chapter of the "Avatar Deed" says: "The ridge is wide and the hub is on the right axis." Special emphasis on separation is the sun and the moon, and the sun and the moon are "easy." There is yang in yin and yin in yang. "Fire-water Wide Map" is the image expression of two hexagrams: Kan (water) and Li (fire). Isn't this idea that yin and yang are combined into one, yin has yang, yang has yin, and yin and yang change the basic idea of Taiji diagram? Judging from the genealogy described by Jue Yuan and others, Taiji is closely related to Taoism. Bai Yuchan, the Wuyi monarch, is the fifth ancestor of Nanzong, and the "hermit in Shu" may be a Taoist in Shu.

The ideological origin is different from the graphic origin. It seems difficult to investigate where the Taiji diagram came from. Let's see who made the earliest Taiji diagram.

First of all, we should set a standard for the graphics of Taiji diagram (because there is no standard, the graphics of primitive times mentioned above are all called "Taiji diagram"). The real taiji diagram should be the mutual positive pattern of yin and yang fish inside, and the circular pattern of gossip or sixty-four hexagrams outside. As for whether the "dragon map" and "congenital map" advocated by Chen Tuan are such figures, there is no way to verify them. So it is difficult to judge that Chen Tuan was the first person to make this picture. Whether this picture was made by Xue Weng or a hermit in Shu is unknown. By searching the existing literature, we found that the earliest Tai Chi map was made by Zhang Xingcheng in Yi Xuan in the Southern Song Dynasty.