A1) He Tu and the pre-heaven diagram

1) The following chart exhibits how the eight trigrams are formed:

Yang, i.e. the masculine, and Yin, i.e. the feminine, (兩儀 liang yi, i.e. the polarities) give birth to four dualities (四象 si xiang, i.e. the young and the old masculine, as well as the young and the old feminine), and then the four dualities create eight trigrams in the sequence of Qian, Dui, Li and Zhen, as well as Kun, Gen, Kan and Xun.

2) The following diagram exhibits how the eight trigrams are integrated and unfolded with He Tu:

3) The following drawings display how the pre-heaven diagram is drawn according to Tai Ji Tu:

After Qian, the sky, and Kun, the earth, are positioned, in following the creation sequence as well as the mutual increase and decrease between the masculine and the feminine in Tai Ji Tu, Dui, Li and Zhen are located counter-clockwise from Qian; Xun, Kan and Gen are located clockwise to Kun. Hereby the pre-heaven diagram (i.e. Fu Xi diagram) is formed accordingly.

Regards

Tuck

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