In China, a person has significant different size of eyes is called a person of Yin-Yang eyes. They said one of the Yin-Yang Eyes has ability to see the spiritual world. So they can see and even communicate with ghosts.
Later, any people can see the spiritual world is called Yin-Yang Eyes people.
Yin Yang Eyes
The Old Tai Chi Diagram has no fish eyes like today.
Fu Xi discovered the secret of Eight Trigrams (ba-Gua). Combing two set of Trigrams become 64 Hexagrams, which can forecast the result of an event according to the circumstance. Just a few of intelligent Chinese mastered 64 hexagrams during Shang Dynasty (1751 BC) and Chou Dynasty. They used 64 hexagrams to conquer China.
River Horse Diagram, Pre-Heavenly Pa-Kua
Lo Shu Turtleback Diagram, Post-Heavenly Pa-Kua
I-Ching: Three Goats Start Fortune
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