火雷噬嗑
Core Insight
火雷噬嗑 — Hexagram 21
Biting Through. An obstacle in the mouth — law must be applied, the obstruction must be removed. Decisive action with clear judgment furthers.
The Image
雷電，噬嗑；先王以明罰敕法。
The Image of Biting Through: make consequences and rules clear enough to remove obstruction. Treat the image as practical discipline, not decoration: let it shape the next concrete choice.
Shifting lines
初爻
At the beginning of Biting Through, keep the move small. Clarify the real question before seeking momentum.
二爻
A steadier position appears. Accept help, test the facts, and choose the next step that can be repeated.
三爻
Pressure rises in Biting Through. Do not make the tension theatrical; name the risk and reduce the unnecessary load.
四爻
The situation nears a threshold. Recheck motives, adjust the method, and avoid forcing a premature outcome.
五爻
This is the governing line of Biting Through. Act from the clearest principle and make the decision useful to others.
上爻
The pattern is reaching its limit. Complete what can be completed, release excess, and prepare for the next change.