Taiji gives birth to two instruments, two instruments and four phases, and four phases give birth to gossip.

Tai Chi means that there are infinite things.

These two instruments represent two different substances, Yin and Yang.

The four phases represent the four seasons of spring, summer, autumn and winter, and also represent the southeast and northwest of the azimuth.

Eight diagrams come from Tai Chi, two instruments and four phases. Eight trigrams became sixty-four hexagrams, which were used by the ancients to predict bad luck.

From Taiji, two instruments and two instruments are born, four phases and four phases are born, and eight diagrams become sixty-four hexagrams, although they are used for divination.