What do promise, tai chi, two instruments, four images and eight diagrams mean respectively?

Infinity means that the chaotic world is invisible until everything is created.

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 Tai Chi to two instruments to two instruments to four phases and four phases to eight diagrams to sixty-four hexagrams, although it is used to predict bad luck, its profound cultural heritage has laid the spiritual cornerstone of our Chinese nation.

These contents come from the Book of Changes.

I suggest you have a chance to have a look, which may have unexpected effects.