Ji Chang, later commonly known as King Wen of Zhou, has no definitive record of his dates or nationality in publicly available sources, and details of his life remain limited. The library holds two works attributed to him, with the Yijing and the Zhouyi as his representative works, commonly classified under history and philosophy. The Zhouyi is traditionally said to form a divination system through hexagram and line symbols together with hexagram and line statements, embodying ideas such as the interplay of yin and yang and the relationship between heaven and humanity. Later Confucians regarded it as a classic, and commentaries on it continued through the ages. Stylistically, the text is terse and archaic, combining symbolism with divinatory statements to express understandings of nature, society, and human affairs, leaving considerable room for interpretation. Because biographical information is limited, knowledge of the author and his works rests mainly on the thematic features and intellectual influence of these two works.
