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Original study guide · 17

Hexagram 17 · Suí (泽雷随)

Direct summary

Hexagram 17, Suí (泽雷随), places Zhèn (震, Thunder) below Duì (兑, Lake).

Its nuclear form is Hexagram 53; its opposite and reversed forms coincide at Hexagram 18.

Structure reading

The lower trigram is Zhèn (震, Thunder); the upper trigram is Duì (兑, Lake).

Sequence context

In the received sequence, Hexagram 17 comes between Hexagrams 16 and 18.

Study prompt

Compare Hexagram 17 with its nuclear form (53), then examine why the opposite and reversed transformations both lead to Hexagram 18. What structural feature makes them coincide?

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.