Hexagram 27 — Sustenance (Yi 颐)

Hexagram 27 joins Mountain over Thunder. Thunder below stirs, moves, and seeks; Mountain above stays still and holds its shape. Together they describe the working jaw: the lower part moves to take in food while the upper part stays fixed, and the whole motion only functions when stillness and movement do their separate, proper jobs.

山下有雷，颐；君子以慎言语，节饮食。

Thunder stirs beneath the mountain: Sustenance. The wise person is careful in speech and moderate in eating and drinking.

In the six-line diagram, counted from the bottom, a single yang line forms the base, four yin lines rise through the middle, and a final yang line closes the top. This line structure, built from two trigrams read together, gives the whole figure the shape of an open mouth with teeth above and below — a picture the commentators read literally as the jaw itself, hinged at bottom and top, empty and waiting in the middle.

颐：贞吉，观颐，自求口实。

Sustenance: to stay true brings good fortune. Observe how nourishment moves, and watch each one seek their own food.

Read as an answer, the Judgment ties good fortune to a specific discipline: stay true, then watch how nourishment actually moves rather than assuming it will simply appear. A careful interpretation treats self-nourishment as a test of character. Notice what you reach for when you are hungry, anxious, or under pressure — food, praise, reassurance, money borrowed against tomorrow — and notice whether you produce that sustenance yourself or wait for someone else to place it in your mouth. The image also warns through the mouth itself: speech taken in carelessly and words spoken without thought both drain the same store of energy this hexagram asks you to protect.

In love, Hexagram 27 asks what you are actually feeding on in the relationship, and where that nourishment originates. Do you bring your own steadiness, warmth, and judgment into the bond, or do you set aside your own sense of what is right in order to watch enviously for whatever affection the other person happens to offer? The first line's warning against giving up your own sacred tortoise for a glimpse of someone else's plate describes a familiar pattern: abandoning your own read on a relationship because someone else's attention looks more appealing in the moment. A healthy connection asks both people to keep judging for themselves, not merely to consume whatever feeling passes by.

For an established relationship, the figure favors clear, mutual provision over lopsided dependence. Watch which direction the caretaking runs. A bond where one person consistently supplies emotional labor, patience, or material support while the other simply receives will eventually strain, the way reaching upward against the natural order in the second line brings misfortune when pressed too far. The fourth line offers the better model: nourishment given attentively and without resentment, watched over with the same steady focus a tiger gives its prey, produces no blame. Aim for a relationship where giving and receiving both stay conscious and freely chosen.

In career matters, Hexagram 27 turns attention to what actually sustains your work: skills you have built, income you have earned, and support you have genuinely secured, as opposed to credentials borrowed, favors owed, or a position propped up by someone else's patience. The first line's caution against abandoning your own judgment to covet another's success applies directly to comparing your path with a colleague's; envy that replaces your own planning tends to leave you dependent rather than capable. Before asking for more resources, check whether you have used what is already available to nourish the plan on your own footing.

For a decision about raising, seeking, or offering support at work, this hexagram distinguishes proper direction from improper direction. The second and third lines both name failures of nourishment sought or given the wrong way — reaching upward outside the normal channel, or refusing to provide for someone who reasonably depends on you. The fifth and sixth lines show the better pattern: holding steady in an unconventional position, or becoming a stable source others can genuinely rely on, even though that role carries real weight. Ask plainly who is meant to provide for whom here, then act inside that proper channel rather than around it.

As a yes-or-no signal, Hexagram 27 favors a conditional yes to any plan built on self-earned sustenance and a caution against anything that depends on taking from someone else's plate. If the question concerns whether to move ahead using your own resources, skills, or savings, the figure supports action, since the whole hexagram treats self-provision as the sounder route. If the plan instead depends on someone else supplying what you have not earned or asked for through the proper channel, slow down and reconsider the request itself.

If the question concerns timing, the fifth line's advice to stay settled and avoid crossing the great river suggests holding position rather than launching a major move right now, even while smaller, steady commitments remain sound. If the question concerns whether support will arrive, look at how it is being sought: nourishment asked for plainly and through the right channel tends toward good fortune, while nourishment chased through envy or pressed for against the natural order tends toward regret. Let the changing line show which of those two patterns applies to your situation.

Beyond its six changing lines, Hexagram 27 sits inside a small family of structurally related figures. Classical commentators read these three relatives as the counter-voices of Sustenance.

Trace the food before you judge the appetite: reading Hexagram 27 means asking where each mouthful in the cast comes from, and four steps ask exactly that.

Suppose you ask, "Should I ask my parents to cover this quarter's shortfall while I rebuild my freelance client list?" and the coins give Hexagram 27 with line 2 changing. The theme is Sustenance: the question is where your support should properly come from. Line 2 — reaching upward against the norm — describes seeking nourishment from a height in a way that goes against the usual channel, and warns that pressing the request forward invites misfortune.

The moving line points to Hexagram 41, Decrease: rather than pressing your parents further, the sounder move is to decrease your expenses and simplify what you actually need this quarter. A grounded next step is to cut discretionary costs, set a smaller, specific target you can meet through client outreach alone, and treat outside help as a last resort rather than the first plan.