Four strong lines packed into the middle with weak ones at either end: a beam too heavy for its supports. Da Guo is a structure carrying more than its ends can bear, and the text says so plainly.
Twenty-eighth in the King Wen order. The Sequence places it after The Corners of the Mouth: without nourishment nothing can move, and what moves after being fed tends to exceed its proper measure.
The Judgement runs roughly: Da Guo. The ridgepole sags. It is worth having somewhere to go. There is success.
Those three statements do not obviously belong together, and that tension is the hexagram. A sagging ridgepole is a roof beam bending under load, which in a timber building is the last warning before the roof comes down. The text states the emergency and then, without softening it, says movement is worthwhile and things can go through. It is not saying the situation is fine. It is saying that a structure under this much strain is not improved by staying still, and that the way out runs forward rather than back.
The Image: the lake rises above the trees. The noble person stands alone without fear and, if they must withdraw from the world, does so without regret.
The natural image is flooding, water standing where it should not, high enough to drown what grows there. What follows for conduct is the most solitary instruction in the book. Not endurance in company, not appeal to authority: standing alone, and if necessary leaving entirely, without becoming bitter about either. The Image is describing what integrity costs when a structure is failing and there is no one to share the position with. It does not claim the standing works. It claims only that the fear and the regret are optional.
Da Guo means the great exceeding, or preponderance of the great, and the name is structural before it is moral. Four yang lines are stacked in the middle of the figure with a single yin line at each end. In a book where balance is the working assumption, that is a shape describing too much weight in the centre and nothing solid at the extremities.
The governing image is a roof beam bending. Everything in the hexagram follows from it: a load that has grown past what the supports were built for, and the strain now visible. This is not a hexagram about crisis arriving from outside. The excess is internal, it accumulated, and by the time the sag is visible the situation is already advanced.
What makes it more interesting than a warning is the Judgement's refusal to counsel retreat. It states the sag and then says there is somewhere worth going. Two of the six lines describe a withered poplar putting out shoots or flowers, which is life appearing where it should not, briefly and out of season. What changes with the question: asked whether something can hold, the answer is that it is under real strain. Asked what to do, the hexagram says move, and it is honest that moving under load is itself dangerous.
In a relationship question this is a bond carrying more than it was built to carry. Not necessarily a bad relationship: an overloaded one. Circumstances, obligations, a crisis that has gone on too long, two people holding up something that would take four.
The second and fifth lines are the ones people quote, both describing a marriage across a wide age gap, one judged favourable and one judged neither good nor bad. What they have in common is a relationship outside the ordinary pattern. The hexagram does not disapprove; it notes that unusual arrangements carry unusual loads. It has no view on whether yours will hold, and it says nothing about what the other person is thinking.
At work Da Guo is the load-bearing person or the load-bearing system, at the point where the strain has become visible. A team running on one person's memory, a process holding up far more than it was designed for, a role that quietly acquired four jobs.
The fourth line is the practical one: the beam is braced, and that is good fortune, but if there is something else going on, humiliation follows. Bracing works if the bracing is the whole intervention. It fails if it is cover for not addressing the load. What the hexagram cannot tell you is how long a strained structure lasts, and anyone claiming otherwise about your job is guessing.
In a money question this describes commitments that have outgrown the base holding them up. Not insolvency: overextension, which is a different and earlier condition. The sag is visible before the beam breaks, and the hexagram is drawn at the sag.
The top line is the warning in plain terms: wading through water that closes over the head. Misfortune, and no blame, which is the text's way of saying the person was not foolish and drowned anyway. None of this is guidance about any actual financial decision. It describes a structural condition, and structural conditions are assessed with records and with someone qualified to read them.
Find out what the load actually is before you brace anything. Write down every commitment the strained thing is currently carrying, in one list, and mark which ones were designed in and which accumulated. Da Guo fails when people reinforce a beam without ever asking why the weight is there. Reducing the load is the only move that changes the structure.
Yin in a yang place, incorrectly placed, and the bottom of a structure that is about to be overloaded. The text is small and careful: white rushes are spread underneath, and there is no blame. Rushes were laid under a sacrificial vessel to set it down safely. A weak line at the base compensates by being scrupulous rather than strong. Changing it produces Hexagram 43, Breakthrough, where the caution is abandoned for a decisive move.
Yang in a yin place, so not correctly placed, but central. A withered poplar puts out fresh shoots; an old man takes a young wife; nothing is unfavourable. The strong line sits directly above the weak bottom line and draws life from the contact. The text approves, and the approval is structural rather than sentimental: renewal here comes from an association across a large difference. Changing it produces Hexagram 31, Influence, where the attraction is the whole subject.
Yang in a yang place, correctly placed, and the text is three characters of pure bad news: the ridgepole sags, misfortune. This is the clearest case in the book of correct placement counting for nothing. The line is strong, it is where it should be, and it is one of four strong lines in a structure that cannot take four. Being right does not help when the problem is the total. Changing it produces Hexagram 47, Oppression.
Yang in a yin place, incorrectly placed, and yet the good line of the hexagram. The ridgepole is braced and there is good fortune, followed by a condition: if there is something else, humiliation. Commentators read the something else as an ulterior motive or a private arrangement on the side. The support holds only while it is the whole of what is going on. Changing it produces Hexagram 48, The Well, where what sustains people is fixed in place.
Yang in a yang place, central and correct, and the text withholds any verdict: a withered poplar puts out flowers, an old woman takes a husband, no blame and no praise. Flowers are not shoots. They are the more spectacular event and the one that leads nowhere, since a flowering on dead wood produces nothing. This is the mirror of the second line and the difference is that nothing follows. Changing it produces Hexagram 32, Duration.
Yin in a yin place at the top, correctly placed, and the ending the hexagram has been moving toward. Someone wades through water and it closes over their head. Misfortune, and then, unexpectedly, no blame. The two verdicts are both meant. The attempt was right and it failed; the person is drowned and not at fault. This is one of the few places in the book that separates outcome from culpability so bluntly. Changing it produces Hexagram 44, Coming to Meet.
The lower trigram is Xun, Wind, which also carries the sense of wood; the upper is Dui, Lake. Water standing over wood, which is drowning rather than watering. Both trigrams are yin in character, and both sit at the outside of a figure whose interior is entirely yang. The weak surrounds the strong here, and it is not enough of it.
The nuclear hexagram, from lines two to five, is Hexagram 1, The Creative, six yang lines and the most concentrated force in the book. That is what is inside Da Guo. The excess is not an accident of circumstance, it is pure creative force with insufficient structure around it. Read together, the two say that the problem is not weakness but unsupported strength.
The inverse is Da Guo itself: turn the figure over and nothing changes, which puts it in the small set of eight symmetrical hexagrams. Its King Wen partner is therefore its line-for-line opposite, Hexagram 27, The Corners of the Mouth, a hollow shape where this one is solid. Empty in the middle against overfull in the middle, paired deliberately.
The oldest material here is Zhou oracle text from roughly the ninth century BCE, and it is unusually domestic: rushes laid under a vessel, a poplar sprouting, two marriages, a drowning. These are recorded observations with verdicts attached, and the verdicts do not always follow from what a modern reader would expect.
The Ten Wings, compiled between about the fourth and second centuries BCE, supplied the Image and its instruction about standing alone. That line has had a long afterlife in Chinese literati culture, quoted by scholars in political exile for two thousand years, and it is worth knowing that it is a commentary rather than part of the oracle.
The Song reading, from Cheng Yi in the eleventh century onward, turned Da Guo into a study of extraordinary times requiring extraordinary conduct. That framing is where the modern sense of the hexagram as heroic comes from.
James Legge's 1882 English is public domain and reasonably literal; he renders the beam as a ridgepole and keeps the strangeness. Richard Wilhelm's German of 1924, into English by Cary Baynes in 1950, is more interpretive and much more widely read. The age-gap marriages in lines two and five have attracted a great deal of commentary in both languages, most of it telling you more about the commentator's period than about the Chinese.
Da Guo gets read as impending disaster, full stop. The ridgepole is sagging, therefore the roof falls in. But the Judgement, having stated the sag, immediately says that going somewhere is worthwhile and that things go through. A reading that stops at the beam has stopped halfway through the sentence. The hexagram describes strain and then recommends movement, which is an uncomfortable combination and the actual content.
The second misreading runs the other way, and it comes from the Image. Standing alone without fear is a stirring line, and it gets used to flatter anybody currently in a minority of one. The Image is not a certificate of correctness. It describes the conduct available to a person whose position has become unsupportable, and being alone is evidence about your circumstances rather than about whether you are right.
The third is what gets done to the two marriage lines. An older man with a younger woman is judged favourable; an older woman with a younger man is judged no blame and no praise. English commentaries either quietly skip the asymmetry or explain it as timeless wisdom. It is neither. It is a bronze-age text reflecting bronze-age assumptions about who may do what, and saying so plainly is more honest than pretending the two verdicts mean the same thing.
Put a real question to the coins.