Yijing twelve-month hexagram cycle

The Yijing twelve-month hexagram cycle is a scheme for reading the changing balance of yin and yang through the year, and for extending that pattern to the fortunes of human society. Its importance lies not in a prediction of an unchanging political order, but in its account of alternation: power gathers, reaches a limit, recedes, and begins again. The translator uses the monthly sequence to explain why the hexagrams give political counsel about advance, restraint, resistance, and recovery, while stressing that seasonal analogy does not turn social change into a promise of perfect stability.

How the Monthly Sequence Works

In the account of Lin, the twelfth-month hexagram, the changing lines register a shift in power. Two strong, undivided lines advance against four weak lines above them, and this growth signifies the approach of authority. Yet the prospect of success comes with a warning: advancing power must be governed by rectitude and caution, because conditions and events change. The accompanying phrase about decline in time therefore qualifies the promise of progress rather than cancelling the cycle's forward movement.

The numerical explanation of month and day phrases rests on the alternating emergence of yin and yang. The sun or day represents yang, and the moon yin; the numbers seven and eight indicate the first appearance of yang and yin respectively. The sequence matters more than a literal reading of a stated duration: the numbers mark the beginning of a phase as one influence yields to another. In the translator's account, Lin belongs to the twelfth month, placing its advancing authority at a point in the annual cycle when change is already implicit in success.

Fû: Return at the Turning Point

Fû means returning or coming back, and its place in the cycle gives that idea a seasonal and political force. The ninth-month hexagram Po represents cold and decay nearing their triumph; the tenth month, Khwăn, completes that decline; Fû follows in the eleventh month, at the winter solstice, when the sun turns back in its course and begins its regular movement toward the summer solstice. The sequence makes return legible as a reversal within the year, not as a sudden escape from the preceding period.

The figure itself concentrates that reversal in its line structure: Po has one strong top line above five weak lines, whereas Fû has one strong line at the bottom beneath five weak ones. The returning strength begins low and meets no distressing obstacle; the weaker lines are described as changing before it into strong ones and becoming its allies. The image is of brightness developing by degrees, day after day and month after month. The text's phrase “In seven days comes his return” is explained through a related sequence of six monthly hexagrams, from the fifth through the tenth months, in which yin increasingly prevails until Khwăn has displaced yang entirely. Fû is the seventh figure in that progression and marks yang's renewed assertion. To apply the sequence to months, the explanation takes a day for a month; the translator says that an analogous process must occur in society and the state, without claiming that its exact form can be specified.

This pattern does not imply that society can reach a perfect condition immune to disturbance. The translator explicitly treats political and social change as analogous to the changes in nature, but rejects the hope of a kingdom that cannot be moved. Fû's return is consequently a model of recovery after decline, not a guarantee that recovery will end change. Its promise is directional and conditional: a diminished force can reassert itself, yet the cycle continues.

Thun: Withdrawal as a Timely Response

The sixth-month hexagram Thun applies the cycle to a different political moment. Its two weak yin lines have established themselves in the year, and the image suggests the growth of small, unprincipled men in the state. As they gain power, superior men are compelled to withdraw. The hexagram's central political counsel is therefore responsive rather than triumphant: when the balance turns against them, those men should retreat instead of pretending that their former position remains secure.

The auspice is not wholly bad. Firm correctness can arrest the threatened evil to a limited extent, even when it cannot simply reverse the conditions that made withdrawal necessary. The line commentary sharpens the distinction between prudent retreat and flight: a subject who hurries away aggravates the danger, while a settled purpose to withdraw is treated more favourably. In the second line, the weak line responds correctly to the strong fifth line, and both occupy central positions; the image of a yellow ox is associated with correctness and centrality. Thus the cycle's counsel is not merely to yield when power shifts, but to withdraw in a manner consistent with restraint and principle.

Kwâi and Kâu: Removing and Resisting Corruption

In the third month, Kwâi represents the last remnant of winter's cold and darkness about to disappear before the approaching warmth and light of summer. The top divided line embodies a small or bad man, such as a feudal prince or high minister, who lends power to a corrupt government or an old dynasty nearing its end. The five undivided lines signify good order or a successor political order. The issue is how to remove a powerful corrupt figure, and the commentary makes character and public sympathy more important than force of arms alone.

The counsel attached to Kwâi combines open accusation with caution about the undertaking. The criminal is to be denounced in court and general sympathy awakened, while the person leading the enterprise remains conscious of its difficulty and danger. Even among his own adherents, the account says, he should make clear that he takes up arms unwillingly. The first line warns against taking the field too early: although strong and placed in the trigram of strength, it stands at the lowest position, where preparation is too slight to make victory certain. The seasonal image of winter giving way thus supports political action, but does not make success automatic or excuse premature action.

Kâu, the fifth-month hexagram, follows the new appearance of a divided line after the dominance of the undivided lines in Kwâi. The seasonal light and heat are now supposed to begin diminishing. Politically, the divided line signifies an unworthy man insinuating himself into government; if left unchecked, he gains influence, displaces good men, and fills their places with others like himself. The counsel is to resist that encroachment before it expands. The name Kâu means a sudden or casual encounter, and the translator argues that the unexpected appearance of the divided line governs the reading of its lines, even where that reading sets aside the more usual logic of line correspondence. In this account, the text's political meaning is not simply extracted from the line mechanics: the figures are made to express judgments first associated with their interpreters.

Political Meaning and Interpretive Limits

Across these monthly readings, the cycle offers a vocabulary for changing political conditions. Lin describes authority advancing but liable to decline; Fû makes recovery begin at the depth of seasonal darkness; Thun counsels principled withdrawal when unworthy power grows; Kwâi addresses the removal of entrenched corruption; and Kâu warns that corruption can re-enter government through a small, initially limited foothold. Seasonal movement supplies the structure, while the hexagrams' line patterns distinguish the particular circumstances and appropriate responses.

The translator treats these correspondences as interpretive explanations, not as proof that each political change can be forecast by a fixed timetable. The months and line configurations help make the movement from decline to recovery, or from strength to retreat, intelligible; they do not establish an exact schedule for events in society. The cycle's lasting significance in this account is its double insistence: political fortunes change as natural conditions do, and wise action depends on reading the phase correctly rather than confusing a temporary advantage with permanence.