Hexagram 27 頤 changing to hexagram 49 革
Changing lines (counted from the bottom): 3, 4, 5, 6.
What to read
Four changing lines: read the two unchanged lines of the resulting hexagram; the lower one is the main one. (Rule set out by Zhu Xi in the Yixue qimeng.)
Hexagram 49 革, line 1
鞏用黃牛之革。
The first line, undivided, shows its subject (as if he were) bound with the skin of a yellow ox.
Hexagram 49 革, line 2
已日乃革之，征吉，无咎。
The second line, divided, shows its subject making his changes after some time has passed. Action taken will be fortunate. There will be no error.
The two hexagrams
Hexagram 27 頤 — judgment
貞吉。觀頤，自求口實。
Î indicates that with firm correctness there will be good fortune (in what is denoted by it). We must look at what we are seeking to nourish, and by the exercise of our thoughts seek for the proper aliment.
Hexagram 49 革 — judgment
已日乃孚，元亨。利貞。悔亡。
(What takes place as indicated by) Ko is believed in only after it has been accomplished. There will be great progress and success. Advantage will come from being firm and correct. (In that case) occasion for repentance will disappear.
The changing lines of hexagram 27
| Line | Chinese | Legge |
|---|---|---|
| 3 | 拂頤，貞凶，十年勿用，无攸利。 | The third line, divided, shows one acting contrary to the method of nourishing. However firm he may be, there will be evil. For ten years let him not take any action, (for) it will not be in any way advantageous. |
| 4 | 顛頤吉，虎視眈眈，其欲逐逐，无咎。 | The fourth line, divided, shows one looking downwards for (the power to) nourish. There will be good fortune. Looking with a tiger's downward unwavering glare, and with his desire that impels him to spring after spring, he will fall into no error. |
| 5 | 拂經，居貞吉，不可涉大川。 | The fifth line, divided, shows one acting contrary to what is regular and proper; but if he abide in firmness, there will be good fortune. He should not, (however, try to) cross the great stream. |
| 6 | 由頤，厲吉，利涉大川。 | The sixth line, undivided, shows him from whom comes the nourishing. His position is perilous, but there will be good fortune. It will be advantageous to cross the great stream. |
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.