"In the Yi there is the Supreme Ultimate. The Supreme Ultimate produces the Two Forms. The Two Forms produce the Four Emblems, and the Four Emblems produce the eight trigrams."
Therefore in (the system of) the Yî there is the Grand Terminus, which produced the two elementary Forms. Those two Forms produced the Four emblematic Symbols, which again produced the eight Trigrams.
The Yi tells the people,the most primitive state is Taiji (the chaos); then Taiji gives birth to two elementary parts, heaven and earth; then the two elementary parts give birth to four figures, gold, wood, water and fire; then the four figures give birth
Therefore in The Zhou Book of Change, there is the supreme ultimate at first. The supreme ultimate gives birth to the two primary forms (yin and yang), the two primary forms give birth to the four basic images (greater yin, greater yang, lesser yin, less