The I Ching is Chinese and specific to Taoism and the Chinese folk religion. The hexagrams are created by meditating on a problem while you cast coins or draw yarrow sticks. The former considered less accurate than the latter. The outcome of the coins or sticks dictates the appearance of the hexagram. You then read the explanation(usually poetic) from the book. Hexagrams can be dynamic and subject to changing lines(lines that change from broken to unbroken or vice versa) reflecting the changing nature of life. It is for this reason the I Ching is known as the Book of Change.