I Ching, the meeting point of spiritual and physical science - the evolution toward spiritual and physical freedom . . . Also called the Book of Changes, I Ching has existed for thousands of years, infl uencing the Chinese culture and now spilling over into the Western world. I Ching uses a symbol system of hexagrams and trigrams to explain the ideas of the dynamic balance of opposites and the laws of change. Make the journey with author Huizhen Zhang as she takes you to a greater understanding of the unifi cation theory, helping you interpret the symbols of I Ching.