雷风恒

Structure

Heng is formed by Thunder (Zhen ☳) above Wind (Xun ☴). Thunder moves above while wind penetrates below — both are in constant motion, yet their relationship is enduring. The upper trigram Zhen brings initiative and decisive movement; the lower Xun brings gentle, persistent penetration. Together they describe the kind of duration that is not static but dynamically sustained — like the seasons, which are always changing yet always return.

Core meaning

Heng is the complement of Xian (Hexagram 31). Where Xian describes the initial attraction and coming together of complementary forces, Heng describes the sustained relationship that follows — the long marriage after the courtship, the established practice after the initial inspiration, the mature institution after the founding moment. Duration is what transforms a beginning into something real and lasting.

The hexagram makes an important distinction between genuine duration and mere stubbornness. Genuine duration is adaptive — it responds to changing circumstances while maintaining its essential direction. The sun and moon endure not by being unchanging but by following their courses reliably. The seasons endure not by being static but by cycling through their changes in a consistent pattern. This is the model Heng offers: constancy of direction combined with flexibility of response.

The traditional text cautions against trying to persist in a fixed position — this leads to rigidity and eventual failure. True duration requires the willingness to adapt, to learn, to adjust the approach while maintaining the fundamental commitment. A relationship that endures does so not because neither person ever changes but because both people continue to choose each other through all the changes.

In Liuyao readings, Heng often appears in questions about long-term commitments — marriages, careers, practices, projects. It asks whether the querent has the genuine staying power that the situation requires, and whether what they are persisting in is truly worth the sustained effort. It can also appear as a reminder that some things require time and cannot be rushed.

In divination

When Heng appears in a reading, the question is whether the querent has the capacity and the genuine commitment to sustain what they have begun. The hexagram favors those who can maintain their direction through changing circumstances without becoming rigid. It asks: is this worth persisting in, and can you persist in it with the adaptive steadiness of natural processes?

Heng is favorable for questions about long-term relationships, sustained projects, career paths, and any situation requiring enduring commitment. It is less favorable for situations requiring quick change, fresh starts, or the abandonment of what is no longer working.