Thunder breaks out of the earth in spring, and everything stirs. Yu is the energy of shared enthusiasm, the excitement that gets people moving together, as music does. Used well, it mobilizes support for a worthy aim. Its shadow is complacency and self-indulgence: enthusiasm needs grounding in a real purpose and awareness of where it leads.
Judgment
豫：利建侯行師。
Delight: favorable to establish lords and to deploy troops.
Image
雷出地奮，豫；先王以作樂崇德，殷薦之上帝，以配祖考。
Thunder bursts out of the earth: delight. Taking this as a model, the former kings composed music to celebrate virtue and presented it grandly to the Lord on High, with their ancestors as fellow guests.
- Shared enthusiasm
- Mobilizing support
- Inspiration and music
- Readiness to act
- Avoiding complacency
- enthusiasm
- inspiration
- momentum
- harmony
- readiness
- joy
- Enthusiasm that moves with the times moves others.
- Inspire rather than command.
- Stay alert; delight can tip into complacency.
The six lines
Lines are numbered from the bottom. In a reading, only the lines that are changing apply to your cast.
Line 1Six at the beginning 初六
Line text
鳴豫，凶。
Delight that is broadcast: misfortune.
Bragging about connections or prospects before anything is achieved invites trouble. Keep your excitement to yourself for now.
- Premature boasting
- Self-importance
- Announcing success too early
- Letting results speak instead
Line 2Six in the second place 六二
Line text
介于石，不終日，貞吉。
Firm as a boulder. Not waiting till the day is over. Steadfastness: good fortune.
You are not carried away by the general excitement. Clear-sighted and firm, you recognize the first signs of change and act at once.
- Clarity amid excitement
- Prompt action
- Being swept along by the crowd
- Seeing early what others miss
Line 3Six in the third place 六三
Line text
盱豫，悔。遲有悔。
Delight that looks up for favor: regret. Being slow: regret.
Waiting for someone above to provide the inspiration, instead of acting yourself, leads to regret. So does dithering. Act on your own initiative.
- Dependence on others' approval
- Missed timing
- Waiting for permission to act
- Taking the initiative yourself
Line 4Nine in the fourth place 九四
Line text
由豫，大有得。勿疑，朋盍簪。
The source of delight: much is gained. Have no doubts; friends gather like hair in a clasp.
You are the source of the enthusiasm, and others rally around your confidence and sincerity. Trust yourself and the people with you.
- Being the inspiring center
- Confidence
- Self-doubt at the crucial moment
- People rallying around your conviction
Line 5Six in the fifth place 六五
Line text
貞疾，恆不死。
Chronically ill, yet lasting and not dying.
A chronic pressure prevents enjoyment, but it also keeps you alert and prevents complacency. The difficulty is lasting but not fatal.
- Lasting pressure
- Survival through constraint
- Treating ongoing strain as normal forever
- Using constraint as a guard against complacency
Line 6Six at the top 上六
Line text
冥豫，成有渝，无咎。
Delight in the dark. Even when it is complete there can be a change: no blame.
Lost in pleasure or illusion, you may have missed reality. It is still possible to wake up and change. Recognizing the delusion clears the blame.
- Waking from illusion
- Change after excess
- Staying lost in self-indulgence
- A sober turn that restores direction
Related hexagrams
Have a question on your mind?
Cast a readingChinese text: Zhouyi 周易 (received classical text). English rendering and notes: Site rendering. About our sources
Commentary
Thunder (movement) rises from earth (devotion). Yu describes the delight that comes when movement meets willing response, like a melody that sets everyone in step. The judgment links this to mobilizing helpers: people follow gladly when the energy feels right. The reading may suggest a moment to inspire others and to act on a wave of goodwill.
The image connects enthusiasm to music and reverence: celebration that unites people and honors what is worthy. The lines are full of warnings, though: boasting, daydreaming, chronic dependency and losing yourself in pleasure. In relation to a question, Yu may emphasize channeling excitement into concrete plans and staying grounded.