This book is intended as a detailed guide to hexagram prediction method using the ancient Chinese classic Book of Changes (Zhou Yi). This writing provides explanations of most of what is called hexagram prediction using the six lines of a hexagram. The author gives information on methods of casting a hexagram, on the use of a cast hexagram to perform a divination, on the use of six relatives, on the use of trunks and branches and on the use of roles of the lines of a hexagram.