Big white jade "yin yang", bagua pendant 46mm on cord Symbol of Dao, tai chi, I Ching. I Ching is a system that has always been used to predict the future. More importantly, though, is its use as a book of wisdom. Because the readings it gives are simple, yet elegant, profound, and intuitive, it is often consulted for its advice and insight into human nature. Wear I Ching for your mindful life.