정(井) — 물 위에 바람. 바람이 우물에 들어가 물을 길어 사람을 기른다. 우물처럼 사람을 기르고 자신을 기르라. 내면의 청명함을 유지하라.
효별 해설
초효：井泥不食，旧井无禽。 The well is muddy — undrinkable; no creatures come to the old well. Resources are neglected; renewal is needed.
이효：井谷射鲋，瓮敝漏。 Small fish in the well, but the jar is broken. Resources exist but cannot be accessed.
삼효：井渫不食，为我心恻。可用汲，王明并受其福。 The well is cleared but not drunk — it saddens my heart; it can be drawn now. With a wise king, all benefit. Talent unrecognized — await a discerning leader.
사효：井甃，无咎。 The well is lined with bricks — no harm. Refine and perfect; build a solid foundation.
오효：井洌，寒泉食。 The well water is clear and cold — a pure spring to drink. Resources are pristine; use with confidence.
상효：井收勿幕，有孚元吉。 The well is open without a cover — sincerity brings supreme good fortune. Share resources openly; all benefit.