Traditional Chinese Medicine (TCM) originated from Zhouyi and is a branch of Yi Dao. Zhouyi has five elements of heaven and earth, giving birth to gossip, and gossip has yin and yang poles. The way to balance heaven and earth goes round and round in harmony with each other. The concept of traditional Chinese medicine is also harmony, so that the yin and yang in the body can be reconciled and in a balanced state. This book mainly expounds the similarities between the concepts of Zhouyi and traditional Chinese medicine, and compares them, paying attention to the balance between the body and the world. And how to adjust the unbalanced state to make it return to a balanced and peaceful state.