《周易》是用“隐”的手法所构成,它以“象”表达思想,许多文字类似今日的“密码”,卦、爻辞虽然简短,而它却能容纳很多内容。如《周易·上经》之首的《乾·坤》二卦,其中就有四、五个系统。作为《周易·下经》之首的《咸·恒》两卦,虽然次于《乾·坤》两卦,它们也蕴藏不少系统。这些系统都具有很高的思想水平,代表着我国古代文明的高度。没揭发这些系统之前,首先分析一下《咸卦》卦辞: The Book of Changes consists of “hidden” techniques. It uses “elephant” to express its thoughts. Many of the characters are similar to today’s “password”. Although they are brief, they contain a lot of content. Such as the “Book of Changes on the” first “Gan Kun” two hexagrams, of which there are four or five systems. As the headline of the Book of Changes, the two Diagrams of “Xian Heng”, although inferior to the “Gan and Kun” twins, contain many systems. These systems all have a high level of ideology and represent the height of ancient civilizations in our country. Before revealing these systems, first analyze the “hexagrams” Gua Ci: