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Original study guide · 42

Hexagram 42 · Yì (风雷益)

Direct summary

Hexagram 42, Yì (风雷益), places Zhèn (震, Thunder) below Xùn (巽, Wind).

Its nuclear, opposite, and reversed forms are Hexagrams 23, 32, and 41.

Structure reading

The lower trigram is Zhèn (震, Thunder); the upper trigram is Xùn (巽, Wind).

Sequence context

In the received sequence, Hexagram 42 comes between Hexagrams 41 and 43.

Study prompt

Compare Hexagram 42 with its nuclear form (23), opposite form (32), and reversed form (41). Which comparison is easiest to describe from the structure alone?

Editorial references

  1. Yi structural index: King Wen number, name, trigrams, and nuclear, opposite, and reversed forms.
  2. Yi editorial method: site-authored guidance is kept separate from classical text.
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Yi original study guidance based on verified structural facts. No restricted source passage is reproduced.