This 8 1/2 x 11 laminated card is an essential tool for any feng shui practitioner doing Flying Star or Eight Mansions Feng Shui. It has everything you need to do a thorough analysis. Both the Solar and Lunar Calendars with their change over dates, Animal Signs and Elements along with the Personal Trigram (Gua) Elements and Numbers all combined in one easy to read reference chart. Plus, the Best and Least Favorable Directions for each Gua Number and all the House Trigram charts are on one side. The reverse side features Flying Star Reigning Period, Annual and Monthly number charts, Lucky and Unlucky Numbers, location of the Three Afflictions, Zodiac compatibilities, Ba-gua attributes, 24 Directions with degrees and Animal Signs and other reminders which should assist you in integrating Flying Star and other compass techniques into your feng shui practice. I am sure that the more you use this card the more ways you will discover this Study Guide can be used.