Exact classical source
山下有风，蛊。君子以振民育德。
Yarrow editorial translation. Wind below the mountain: Work on the Decayed. Thus the noble person rouses people and nurtures conduct.
Yarrow / Source Notes / 2026-07-17
Yarrow Image-to-Action note · 2026-07-17
Repair the Upstream Cause, Not the Third Patch
Read Hexagram 18 Gu through wind held below a mountain, then move a recurring repair upstream and teach the preventive check.
䷑
Hexagram 18 · Gu · Work on the Decayed
This page studies a supplied Xiang image. It does not claim this hexagram was cast for the modern scene.
Source image
Wind moves below a mountain but cannot simply pass through it, so hidden pressure persists beneath an apparently stable surface.
Concrete tension
The same defect is patched by the final team every week, while nobody traces how it entered the work three handoffs earlier.
Visible modern action
Trace the next defect across three handoffs on one page. Mark the earliest preventable cause, repair that one upstream step, and teach its owner a two-minute check using one real example before the next handoff occurs.
Why this action comes from this source
The source joins inherited disorder with rousing people and cultivating conduct. Tracing three handoffs reveals where the hidden pressure begins; repairing the earliest cause changes the process, while teaching the check ensures the improvement travels with the people doing the work.
Reflection question
Which upstream handoff keeps sending the same defect forward?
Audience value
Informative: the note replaces repeated downstream repair with a three-handoff trace, one upstream fix, and one taught guardrail.
Source boundary
The Chinese quotation is checked against Yarrow's bundled Yang Tiancai and Zhang Shanwen source text. Where that OCR witness substitutes a character, the page discloses the raw reading and checks the correction against a second classical witness. The English translation, objects, tension, and action are modern Yarrow editorial work. This is not a fresh cast, prediction, or promised outcome.