King Wen’s imprisonment at Youli and interpretation of the Changes is the traditional account of how political confinement became a setting for the formation of the I Ching’s sixty-four hexagrams. Under threat from the last ruler of Shang, King Wen is said to have extended the eight trigrams into sixty-four figures and supplied each with a brief judgment. In the translator’s reconstruction, this was not simply an exercise in divination: it was an effort to set divinatory figures within a reasoned language of counsel, warning, and political reflection.

Political crisis and imprisonment

The account places the episode amid the decline of Shang rule. Its king, Shou, is depicted as tyrannical and contemptuous of virtue, estranged from both Heaven and the people. In the west, the principality of Zhou had long been associated with capable and virtuous leadership. Its lord, King Wen, had become a kind of viceroy over much of the kingdom, distinguished in peace and war and admired by princes and common people. Although they would have welcomed his leading an attack against the tyrant, he held back rather than risk appearing disloyal.

That restraint did not protect him from suspicion. Shou’s jealousy eventually led to King Wen’s imprisonment at Youli in 1143 BC, when, according to the account, an order for his death might arrive at any moment. The danger gives the episode its defining tension: the man regarded as a potential alternative ruler was confined by the sovereign whose authority he had declined to challenge openly. King Wen was released the following year after his friends appeased the king’s suspicion, but the traditional dating places the beginning, and perhaps the completion, of his contribution to the I Ching within this brief crisis.

The figures and their interpretation

The figures King Wen worked with were not new inventions in the broad sense. Trigrams had already been used for divination, and the use of divining stalks belonged to a much older practice. The account points to early references to consulting both tortoise shell and stalks when examining doubts. King Wen, as a ruler familiar with the institutions of his country, would have known this practice. The translator speculates that the appearance of studying divinatory figures might even have reassured his suspicious keepers; that possibility is presented as conjecture, not as an established motive.

The defining change attributed to King Wen is the expansion of the eight trigrams into sixty-four hexagrams. The historical notice cited by the translator specifically says that, while confined at Youli, he increased the trigrams to sixty-four. In the translator’s imagined reconstruction, he arranged the figures before him, connected each with a particular idea, and gave it a name expressing that idea. He then set it out in a short statement that could counsel or warn. The figures might speak, in this reading, of qualities in nature, principles of human society, or the actual and possible condition of the kingdom.

This interpretation makes the work an attempt to discipline divination rather than merely to encourage prediction. Instead of treating the figures as license for unbounded speculation, King Wen’s judgments are understood as tying them to intelligible patterns and practical reflection. The narrative thus brings two functions together: the figures remain instruments associated with divination, while their short texts make them vehicles for warnings about conduct and the political order.

Purpose and limits of divination

The book’s account of divination distinguishes consultation from foreknowledge. Its stated purpose was not to discover future events absolutely, as though they were already knowable, but to ask whether contemplated plans or circumstances were likely to turn out auspiciously or badly. The figures therefore addressed decisions under uncertainty; they did not, in this explanation, provide a complete advance account of what would happen.

The described procedure depended on divining stalks. Forty-nine stalks were used, and each line required three manipulations, making eighteen manipulations in all for a hexagram. The resulting numbers determined the lines: odd numbers produced strong, undivided lines, while even numbers produced weak, divided ones. The numbers associated with the four emblematic symbols included 9, 8, 7, and 6. Once the figure had been formed, its interpretation drew on King Wen’s judgments and the emblematic statements attributed to the Duke of Zhou. Numbers served in producing the hexagram; the account does not make them an independent key to every event in nature.

The translator draws a sharp distinction between that procedure and claims that the I Ching could reveal all future occurrences. He warns that incautious language in an appendix could mislead a cursory reader, but maintains that careful interpretation limits divination to judging the likely outcome of contemplated schemes. The traditional episode is therefore bound to an enduring ambiguity: King Wen’s work is said to have grown out of a divinatory practice, yet its literary and political force lies in the counsel attached to the figures, not in an unrestricted promise of prophecy.

Textual inheritance and authorship

King Wen’s portion was only a small part of the received I Ching. The translator attributes a larger share to his son Tan, the Duke of Zhou, who supplied material concerning individual lines and completed the work a few decades later. He suggests that the son may have taken up the figures as an act of filial duty, extending to each line what his father had done for the hexagram as a whole. The account does not establish the son’s motive, but it presents the two contributions as distinct stages in the making of the early text.

The translator dates King Wen’s contribution to 1143 or 1142 BC and argues that the received Text, including the Duke of Zhou’s work, was complete before the duke’s death in 1105 BC. He separates this early Text from the later Appendixes traditionally associated with Confucius, which he places many centuries afterward and treats as a distinct layer rather than part of a single homogeneous composition. This distinction matters to the imprisonment story: the core judgments belong to an early political and divinatory context, whereas later explanations represent subsequent efforts to interpret the figures and their relation to the text.

The work’s later transmission further complicated that separation. The I Ching escaped Qin Shi Huang’s book burning in 213 BC because it was classified as a work of divination, one of the categories exempted from destruction. A catalogue compiled near the beginning of the Common Era listed works on the I Ching and its Appendixes by thirteen authors or schools, comprising 294 portions. Much later, the imperial edition published in 1715 quoted 218 scholars. Yet common editions had interleaved five Appendixes with the older Text, a practice the translator believed blurred the difference in age and ideas between them. The imprisonment at Youli thus became not only an origin story for the hexagrams but the first layer in a long history of preservation, commentary, and contested authorship.