If Kuí has appeared in your reading, the book is naming a configuration of opposition — not necessarily hostile, but structural. Fire above moves upward; lake below moves downward. The two trigrams in the hexagram are heading away from each other by their own natures. The hexagram appears when two things that should align are drifting apart, often without either party having meant to cause the drift.

Classical commentary treats this hexagram as the gentler cousin of Sòng (Conflict). Where Sòng is open friction over a real dispute, Kuí is the quieter estrangement in which the parties are not actively fighting but no longer fitting. The book is precise about the response: large undertakings will not repair it; small consistent acts of recognition might.

What the book counsels is the patient practice of small reconnections. 小事吉 — small matters are auspicious. Not the grand reconciliation. Not the sweeping conversation. The repeated, modest gesture: the message answered, the meal shared, the favour returned. These accumulate, in this hexagram, into the only kind of repair that can be made of a drift that did not have a single cause.

Kuí's failure mode is the attempt to resolve the opposition with a single decisive move. The book is alert to it. The hexagram appears when the reader is tempted to force a clarifying conversation, a dramatic gesture, an ultimatum that will settle the matter. The clearance is unambiguous: in this season, the large move backfires. Hold to the small steady consistency. Some seasons are like this.