Hello, Write notified of such a book needs to have some expertise in Traditional Chinese Medicine in Ching and Taoism but probably also in numerology. I am the author of the I Ching and practice my partner is in TCM practitioner for 7 years. I am also numerologist Birth Diamond creator. I took the time to read the book completely and check on concrete cases. This book is not an I Ching itself. He made the connection between your day and month of birth and one of the 64 hexagrams according Taoist calendar and offers 4 other hexagrams in connection with the first. Numerology adding the day and month reveals your wealth, your major resource and the way you incarnate. Through 5 hexagrams and starting your day and month, this book offers a brief description of your party structure, as does for example a Mayan theme, Birth horoscope or Diamond. Descriptions are relatively succinct. Sometimes they are very relevant and sometimes they are a bit confused. Hence 4 stars and not 5. I like this book because however much it had been since 1976 that a work combining yi king and structure of being was not published. It has the merit of existing and it opens new landscapes and new understandings both for aficionados of the I Ching and for TCM practitioners. Next, we need to deepen. Note that I do not know the author. Beautiful day. Amicalement.EJP