"The Book of Changes" is an important classic document in ancient China. It contains 64 hexagrams, each of which has its own unique symbolic meaning and interpretation. These 64 hexagrams reveal the changing laws of everything in the universe through different combinations of yin and yang. Starting with the Qian hexagram, it represents the beginning of heaven, the masculine force, while the Kun hexagram symbolizes the earth, the foundation of the feminine. With the changes in the hexagrams, we can see the whole process of things from birth to development to maturity and decline. Each hexagram contains profound philosophy, such as the need to act cautiously, adapt to the current situation, and the golden mean, etc. In addition, "The Book of Changes" also emphasizes the ideas of "change" and "simplification", believing that everything in the world is constantly changing, and true wisdom lies in grasping the nature of change and using simplicity to control complexity. "The 64 Hexagrams of Zhouyi" are not only the crystallization of ancient wisdom, but also an important reference for modern people to cultivate their moral character and guide their practice.