If Míng Yí has appeared in your reading, the book is naming the season in which the inner light is intact but the outer environment is hostile to it. Fire below, earth above; the sun has sunk beneath the horizon. The character of the hexagram literally means brightness-wounded — the light is not extinguished, but it has been driven into hiding.

Classical commentary reads this hexagram alongside Jìn (Progress), which it directly inverts in the King Wen sequence. The pair forms a study in cycles of visibility. Jìn is the season of being seen. Míng Yí is the season of being safe by not being seen. The hexagram appears when the reader is correct about something the surrounding field is not yet ready to acknowledge — or actively punishes.

What the book counsels is the disciplined concealment that protects the inner work without compromising it. 用晦而明 — use the dim, and remain bright. This is one of the book's more demanding lines. The reader is asked to dim the outward signal while keeping the inward fire whole, and to do both at once without confusing one for the other. The dimming is tactical; the brightness is essential.

Míng Yí's failure mode is one of two opposites: either to extinguish the inner light altogether in order to fit the dark season, or to insist on full visibility regardless of cost. The book counsels neither. The hexagram appears when the reader is in a setting that does not welcome what they actually know. Hold the knowing. Let the outer surface speak the language of the room.