Hexagram 34 大壯 changing to hexagram 18 蠱
Changing lines (counted from the bottom): 1, 4, 6.
What to read
Three changing lines: read the judgments of the original and the resulting hexagram; the original is the main one. (Rule set out by Zhu Xi in the Yixue qimeng.)
Judgment of hexagram 34 大壯
利貞。
Ta Kwang indicates that (under the conditions which it symbolises) it will be advantageous to be firm and correct.
Judgment of hexagram 18 蠱
元亨。利涉大川。先甲三日，後甲三日。
Kû indicates great progress and success (to him who deals properly with the condition represented by it). There will be advantage in (efforts like that of) crossing the great stream. (He should weigh well, however, the events of) three days before the turning point, and those (to be done) three days after it.
The two hexagrams
Hexagram 34 大壯 — judgment
利貞。
Ta Kwang indicates that (under the conditions which it symbolises) it will be advantageous to be firm and correct.
Hexagram 18 蠱 — judgment
元亨。利涉大川。先甲三日，後甲三日。
Kû indicates great progress and success (to him who deals properly with the condition represented by it). There will be advantage in (efforts like that of) crossing the great stream. (He should weigh well, however, the events of) three days before the turning point, and those (to be done) three days after it.
The changing lines of hexagram 34
| Line | Chinese | Legge |
|---|---|---|
| 1 | 壯于趾，征凶，有孚。 | The first line, undivided, shows its subject manifesting his strength in his toes. But advance will lead to evil,—most certainly. |
| 4 | 貞吉悔亡，藩決不羸，壯于大轝之腹。 | The fourth line, undivided, shows (a case in which) firm correctness leads to good fortune, and occasion for repentance disappears. (We see) the fence opened without the horns being entangled. The strength is like that in the wheel-spokes of a large waggon. |
| 6 | 羝羊觸藩，不能退，不能遂，无攸利，艱則吉。 | The sixth line, divided, shows (one who may be compared to) the ram butting against the fence, and unable either to retreat, or to advance as he would fain do. There will not be advantage in any respect; but if he realise the difficulty (of his position), there will be good fortune. |
English: James Legge (1882), public domain. Chinese: Zhou Yi.
Data: English Wikisource (Public domain texts; transcription CC BY-SA 4.0); Chinese Wikisource (Public domain texts; transcription CC BY-SA 4.0). Retrieved 2026-10-22.