 As the name of the work suggests, the work tells of how to divine with tokens like Chinese chess or "xiangqi" (象棋) pieces, instead of with the traditional turtle shells or yarrow stalks used in "I Ching".Twelve Xiangqi pieces are used; each is a disc with a character on one side, and unmarked on the other.Four have the character for "up" (, pronounced "shang"), four have the character for "middle" (, "zhong"), and four have the character for "down" (, "xia"), representing the Three Realms