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River Horse Diagram, Pre-Heavenly Bagua

Probably before 3083 B.C., before the Yellow King reigned in 2697 B.C., there was a wise person named Fu Xi who saw a wild horse with a weird diagram on its back that jumped out from the River. The diagram implied 5 and 10 in the center, 3 and 8 on the left, 4 and 9 on the right; 2 and 7 on the top, and 1 and 6 on the bottom.

The wild horse was called Dragon Horse. The diagram on the horseback was called River Diagram.


The legendary Fu Xi found the numbers in the diagram have a connection with the stars in the evening. Every year,

Because the Four directions have a relationship with the Five Elements, Chinese named Venus, Mercury, Jupiter, Mar, and Saturn as the stars of Metal, Water, Wood, Fire, and Earth

  2  7  
3  8 5 10

4 9 

  1  6  
  • 1 and 6 are in the north; this stands for Water
  • 2 and 7 are in the south; this stands for Fire
  • 3 and 8 are in the east; this stands for Wood
  • 4 and 9 are in the west; this stands for Metal
  • 5 and 10 are in the center; this stands for Earth

1, 3, 5, 7, and 9 are Yang (odd) numbers. 2, 4, 6, 8, and 10 are called Yin (even) numbers. 5 is the center number.

1, 2, 3, and 4 are in the inner circle. 6, 7, 8, and 9 are the outer numbers. The inner numbers plus center number 5 are equal to the outer numbers. Therefore 1, 2, 3, and 4 are called Heavenly Original Numbers; 6, 7, 8, and 9 are called Earthly Developed Numbers.

The sum from 1 to 10 is 55, which is called Heavenly Number. 5 is the center number of 1, 3, 5, 7, and 9 yang numbers. Also, 5 connects with many arithmetic calculations, 5 becomes the secret index of Heaven from the hint of the River Diagram. That's why the day system in the Chinese calendar used a cycle of 5 before.

After applying the Five Elements on the River Diagram, we find the Five Elements Producing Relationship shows in a clockwise direction. That's why the Number Relationships are applied to the Chinese Five Elements astrology by Five Element scholars later.

I Ching Bagua Map (Eight Trigrams)

Rive Square Diagram The River Diagram derived the Pre-Heaven Bagua.

Fu Xi thought that is one, stands for the sky; is two, stands for the earth. One pluses two is three, which can be the symbol of sky and earth. We call this symbol Trigram. is three Yang, stands for Heaven on the top of the sky. is three Yin, six bars, stands for earth on the ground bottom.

6 stands for most Yin. Also, 6 is the center number of 2, 4, 6, 8, and 10 Yin numbers. Therefore 6 becomes an index of Earth.

Pre-Heaven Bagua

Base on the knowledge of astronomy and the River Diagram, Fu Xi created a diagram of Eight Trigrams, which is called the Pre-Heaven Bagua Map.

Old Yang and Old Yin

The Yang and Yin combination makes four phenomena. The strongest Yang is 9, Old Yang. The weakest Yin is 6, Old Yin.

Four Phenomenon Index Number Completion Number - Make to 10 Yin/Yang Name
1 9 Old Yang
2 8 Young Yin
3 7 Young Yang
4 6 Old Yin

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By Master Allen Tsai on December 2, 2021

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