西周时，把已成书的《周易》──《易经》六十四卦每卦每交都作解释，叫“卦辞”和“交辞”。为使人易懂，《易经）的这些“交辞”，都用文学语言、散文、韵文的形式写成；就其内容，则反映了当时生活上的婚、丧、嫁、娶、耕、牧、渔、猎；在社会结构上反映家庭＼法律；在战争 In the Western Zhou Dynasty, the book of the Book of Changes, the “hexagrams” of each of the sixty-four hexagrams of the Book of Changes, is explained at every turn, and is called the “Gua Ci” and the “renunciation.” For the sake of easy comprehension, these “excerpts” of the Book of Changes are written in the form of literary language, prose, and verse; in their content, the words of marriage, funeral, marriage, marriage, Animal husbandry, hunting and hunting; family / law in the social structure; in war