《周易》全书分上经、下经，上经自乾卦始，下经自咸卦始。一般认为，上经以天道为基础，推天道以明人事；下经以人伦为基础，所谓正夫妇以醇天下。咸卦正担当了人伦基础的重任。关于咸卦卦名，唐·陆德明《经典释文》里是这样解释的，“咸，如字。《彖》云‘感也’”。意即感 “Book of Changes” book by the classics, by the next, since the beginning of the hexagrams, the next since the salty hexagram. It is generally believed that the Sutra used the Heavenly Way as its foundation to push forward the Taoism to clarify people’s affairs. Under the principle of “human beings,” the so-called “couple” used the world of alcohol. Xian-hua is playing a human relationship based on the task. On the hexagrams Gua name, Tang Lu Deming “Classic Interpretation” is explained in this way, “salty, such as the word.” 彖 “cloud” also ". Meaning