Hexagram 41 Sun (Decrease) — Trigram Structure & Line Overview
Trigram Structure Upper: Mountain (Gen ☶) · Lower: Lake (Dui ☱)
Sequence & Paired Hexagram ← #40 Xie · #42 Yi → · Pair: #42 Yi

Classical Image Maxim: "Lake below mountain; restrain anger and quiet selfish desires." — Already cast Hexagram 41 Sun with one or more changing lines (Lines 1 to 6)? Look up your exact moving-line combination in the Hexagram 41 Sun Lookup Tool, browse all 64 I Ching hexagrams, or map a career decision:

Hexagram 41: Sun (Decrease)
King Wen #41 Mountain ☶ Over Lake ☱
Upper Trigram (Outer)
Gen / Mountain ☶
Stillness · Clear Boundary
Lower Trigram (Inner)
Dui / Lake ☱
Open Exchange · Joyous Relief
Line 6 · Top Yang
Increasing Others Without Loss
Line 5 · 5th Yin ★
Ten Pairs of Tortoise Shells
Line 4 · 4th Yin
Diminishing One's Own Faults
Line 3 · 3rd Yin
Three Walking Lose One
Line 2 · 2nd Yang
Helping Without Diminishing Self
Line 1 · 1st Yang
Finishing One's Task to Help
The Great Image: "Lake below mountain; restrain anger and quiet selfish desires."

Hexagram 41 Meaning & Interpretation

In the received King Wen sequence of the Book of Changes (Zhouyi), Hexagram 41 — Sun (Decrease) is the 41st six-line figure, formed by placing the upper trigram Mountain (Gen ☶) above the lower trigram Lake (Dui ☱). It forms a structural pair with Hexagram 42 (Yi, Increase), contrasting their complementary stages of change across the sixty-four hexagrams.

The classical Judgment (gua ci) and the Great Image (da xiang) read the interaction between outer Mountain (Gen ☶) and inner Lake (Dui ☱) as an integrated pattern of timing and conduct. The Great Image states: "Lake below mountain; restrain anger and quiet selfish desires." In classical commentary, the Judgment names the macro climate sitting before you, while the Image describes how a discerning person (junzi) aligns daily posture with that climate before examining any individual moving lines.


Hexagram 41 Unchanging (No Changing Lines)

When all six positions come out settled — only 7s and 8s, with no moving 6 or 9 — the figure is a static hexagram (jing gua). According to Zhu Xi's rule in the Zhouyi Benyi, there is no relating figure and no moving line text; the reading rests on the Judgment (gua ci) and the Great Image (da xiang) of Hexagram 41. Because Sun has no seventh all-moving statement, an unchanging cast describes a deliberate season of paring back, simplifying, and transferring energy from excess to what truly matters.

Structurally, Sun places Mountain (Gen, ☶) above Lake (Dui, ☱): the deep marsh at the foot of the mountain evaporates upward to nourish the peaks. The Judgment asks a timeless question about sincerity under constraint: "What is there to use in the offering? Two small bowls may be used for the presentation." When no lines change, the reading assures you that stripping away ornament does not diminish worth; plain sincerity carries more weight than elaborate display when resources or bandwidth are tight.

The Great Image brings this reduction home to character: "Lake below mountain; restrain anger and quiet selfish desires." Less noise on the surface leaves more strength at the core.

  • Where are you confusing lavish effort with genuine sincerity? Two simple bowls offered with a whole heart outweigh an exhausting performance.
  • Which reactive impulse — irritation or grasping — is draining your reserves? Quieting those two drains immediately restores steadiness.
  • What non-essential obligation can be simplified right now? Letting go of clutter lightens the entire structure.

Hexagram 41 in Love & Relationships

In matters of love and partnership, Hexagram 41 examines how two people handle giving, sacrifice, emotional bandwidth, and simplicity. Paired in the King Wen sequence with Hexagram 42 (Yi, Increase), Sun teaches that healthy closeness sometimes requires subtracting ego, reactivity, and outside distractions rather than adding more intensity. When cast unchanging, it reassures you that quiet, unadorned affection — showing up honestly with "two small bowls" — is more than enough when both hearts are sincere.

When individual lines move, the six positions explore the fine boundary between healthy generosity and self-depletion:

  1. First position — Finishing one's task and hurrying to help, yet measuring what can be spared: Supporting a partner through a busy or hard week is admirable, provided you pause to ask how much you can give without resentment or burnout.
  2. Second position — Steadfastness is favorable; to benefit the other without diminishing oneself: The clearest warning against over-giving: you serve a relationship best by keeping your own dignity and boundaries intact rather than martyring yourself.
  3. Third position — When three walk together, their number decreases by one; when one walks alone, they find a companion: Crowded triangles, divided loyalties, or third-party meddling cloud intimacy, whereas clear, undivided commitment draws a true partner close.
  4. Fourth position — Decreasing one's own flaw so the other can approach: Owning and softening a defensive habit — impatience, sarcasm, or aloofness — makes it easy and joyful for your partner to reconnect.
  5. Fifth position — Enriched by ten pairs of tortoise shells that cannot be refused: When you cultivate quiet receptivity and genuine humility, deep affection and support flow toward you naturally without having to chase them.
  6. Top position — Increasing others without diminishing oneself, creating a shared home: At the highest maturity of Sun, generosity comes from a full cup rather than self-sacrifice, blessing the whole household.

Questions to sit with:
- Are you giving from a grounded place (Line 2), or giving until you feel hollowed out and resentful?
- What third element — a distraction, an interference, or a defensive habit — needs to be simplified so two people can truly meet?
- How does this deliberate paring back prepare the ground for the mutual generosity of Hexagram 42 (Yi)?


Hexagram 41 in Career & Decisions

Hexagram 41 governs the executive discipline of cutting burn rates, terminating vanity projects, and purging toxic partners:
1. **The Frugal Minimalist Axiom **: When surviving an economic downturn, flashy marketing is poison. Two simple bowls of plain grain offered with pristine sincerity yield greater celestial resonance than a lavish, debt-funded banquet. Run a ruthless MVP.
2. The Triad Shattering Law (Line 3): When three equals attempt to co-steer a company, political cabals and paranoid alliances inevitably metastasize. Purge one partner; the remaining dual structure achieves instant velocity. Conversely, an isolated founder seeking a co-pilot will find true alignment.
3. The Swift Amputation (Line 4): Malignant business units must be cut with surgical velocity. Dilly-dallying with hopeless legacy subsidiaries burns down the healthy parent corporation.

The Six Lines of Hexagram 41

1. Line 1 (Initial Yang): Going Swiftly When Tasks Are Done, Weighing What to Give.

yi shi chuan wang, wu jiu, zhuo sun zhi — "when one's own affair is finished, going swiftly brings no blame; yet weigh carefully how much to decrease."

At the bottom of the lower trigram, strength is abundant and eager to support the receptive fourth line above. Stepping in promptly once your own duties are settled is admirable, yet generosity still needs measure. Weighing what you can genuinely spare keeps helpfulness from draining your own foundation.

This line asks: how much can you give to help someone else without emptying what you need to stand on?

2. Line 2 (Second Yang): Steadiness Favorable; Helping Without Diminishing Yourself.

li zhen, zheng xiong, fu sun yi zhi — "it furthers one to remain steadfast; marching out brings a setback; without diminishing oneself, one increases the other."

Centered in the lower Lake trigram, this strong line best serves the fifth line above by keeping its own dignity intact. Rushing out to please or sacrificing your core principles to be agreeable only weakens both sides. True support comes from offering honest strength from a grounded center.

This line asks: where can you help someone far more by holding your standards than by giving in to their demands?

3. Line 3 (Third Yin): When Three Walk Together, One Is Lost.

san ren xing ze sun yi ren, yi ren xing ze de qi you — "when three walk together, their number decreases by one; when one walks alone, they find their companion."

In the Book of Changes, genuine correspondence happens between two complementary lines, whereas three creates an unstable crowd where one is left out. Stripping away divided loyalties and third-wheel distractions restores the simplicity needed for a true meeting of minds.

This line asks: what extra distraction or divided loyalty needs to drop away so a real partnership can form?

4. Line 4 (Fourth Yin): Diminishing One's Own Affliction Brings Swift Joy.

sun qi ji, shi chuan you xi, wu jiu — "diminishing one's affliction makes helpers come swiftly with joy; no blame."

Here "decrease" turns inward toward a fault, habit, or defensive blindness of your own. When you openly acknowledge and trim back what is ailing your conduct, the people trying to help you no longer have to fight your resistance. Relief arrives quickly because you made room for it.

This line asks: which stubborn habit of your own, if dropped today, would let others help you gladly?

5. Line 5 (Fifth Yin): Enriched by Ten Pairs of Tortoise Shells.

huo yi zhi shi peng zhi gui, fu ke wei, yuan ji — "someone enriches one with ten pairs of tortoise shells; nothing can oppose it; the most favorable outcome."

Because the fifth line sits in the highest place with an open, receptive heart and decreased ego, support flows upward to it naturally from the whole figure. When humility at the top is genuine rather than calculated, the trust and resources that gather around it cannot be turned aside.

This line asks: are you open enough at the center to receive the help and wisdom others are offering you?

6. Line 6 (Top Yang): Increasing Others Without Diminishing Oneself.

fu sun yi zhi, wu jiu, zhen ji, li you you wang, de chen wu jia — "without diminishing oneself, one increases others; no blame; steadiness brings a favorable outcome; it furthers one to have somewhere to go; one gains helpers and no longer counts only a private household."

At the summit of Decrease, what was conserved and pared down has accumulated into genuine abundance. By sharing that surplus in a spirit that looks beyond narrow family or factional walls ("no private household"), you enrich the whole community without impoverishing yourself.

This line asks: how can the strength you have conserved now serve a wider circle than your own private interest?

This figure carries no additional all-moving statement. When all six lines move, read the transformed figure.


Hexagram 41 FAQ

Q Why does Hexagram 41 treat 'Decrease' (Sun) as constructive rather than as a loss?

A: In the classical image of Lake below Mountain, decreasing excess at the bottom strengthens the height above, and in human conduct it means restraining anger and curbing appetite. Letting go of ornament, distraction, and ego leaves what is essential stronger and clearer.

Q What does 'when three walk together, their number decreases by one' mean in Line 3?

A: Line 3 reads san ren xing ze sun yi ren, yi ren xing ze de qi you. It reflects the structural transition where the third line of the lower trigram yields to form the figure: three competing attachments breed division, whereas single-minded focus allows two complements to meet cleanly.

Q How does Hexagram 41 (Sun) relate to Hexagram 42 (Yi)?

A: Hexagram 41 (Decrease) and Hexagram 42 (Increase) are an inseparable inverted pair. Sun reduces what is excessive below to solidify the core and cultivate inner restraint; Yi takes the strength gathered above and pours it back down to nourish the foundation and undertake great works.


Did one or more lines move when you cast Hexagram 41 Sun?

In classical six-line analysis, reading all six line statements at once mixes opposite stages of the cycle. Isolate only the changing lines that scored 6 or 9 in your session using Zhu Xi's changing-line rules or 50-stalk yarrow probabilities:

Related Hexagrams & 6-Bit Transitions (Hexagram 41 Sun)

In the Book of Changes (Zhouyi) binary topology, this hexagram is connected to its Opposite (Bitwise NOT), Inverse (180° Rotation), and Nuclear (Inner Core Lines 2–5) archetypes:

How to read this hexagram in context →