Heng is the hexagram of what endures. It follows Influence — first the attraction, then the keeping of it. Thunder above and Wind below are the image of a storm that moves steadily across the land: force joined to constancy. The judgment is plain — "success, no blame, perseverance furthers" — but the hexagram's real teaching is in its conditions. Duration is not simply staying; it is staying in a way that stays true to what it is.
In the tradition, Heng is read above all as the hexagram of marriage and long partnership. It names the quality that turns courtship into a bond: constancy through the changes. Line 5's remark — "good fortune for a woman, misfortune for a man" — reflects the older custom of fixed roles, but its deeper point is that duration requires each person to hold their own steady place, without rigidity and without drift.
In career and enterprise, Heng counsels the long project over the quick win. Line 3's warning — "he who does not give duration to his character meets with disgrace" — is the hexagram's core for work: build a steady character, and the undertakings built on it will last; chase results without character, and they will not. Line 6 adds the caution against restlessness dressed up as energy.
For timing, Heng says the moment favors commitment, not novelty. If the question is whether to begin something meant to last — a partnership, a course of study, a structure — the answer leans yes, provided the direction is sound. The hexagram asks you to choose a direction and then stay with it long enough for constancy to do its quiet work.
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Cast the I Ching Oracle → Free · No sign-up · 3,000-year-old methodSource: Judgment and line texts follow the Wilhelm/Baynes rendering of the Yijing used across energyyi.com (Wilhelm's original German, 1924, is in the public domain).