What Is Kong Wang (空亡) in BaZi? How to Find Your Void Branches

English

Kong Wang (空亡) is the pair of Earthly Branches that a given 10-day cycle of the 60 JiaZi (六十甲子) leaves unpaired. In BaZi, those two branches — and only those two — are considered "void" (空) or "empty" (亡) for that specific chart. It is one of the most frequently asked-about and most frequently misread ideas in classical Chinese metaphysics, and it is not a Shen Sha in the usual auspicious/inauspicious sense: on its own it has no moral valence at all.

1. Why Do Two Branches End Up "Empty"?

Because ten Heavenly Stems cannot be evenly matched with twelve Earthly Branches. The stems (甲乙丙丁戊己庚辛壬癸) and branches (子丑寅卯辰巳午未申酉戌亥) pair off in sequence, and the least common multiple of 10 and 12 is 60 — the full sexagenary cycle. Divide those 60 into six groups of ten, and each group consumes ten branches while leaving exactly two unmatched.

Those two orphaned branches are called gu (孤), "branch without a stem." Classical phrasing distinguishes 空 (position exists but has no stem) from 亡 (branch exists but nothing reaches it). So the concept is not mystical at all — it is an arithmetic artifact of the Chinese calendar, and every chart inherits it from its day pillar.

2. How Do You Find Your Kong Wang? (The Working Method)

Look at your day pillar, find which of the six 旬 (ten-day cycles) it belongs to, and that 旬's two unused branches are your Kong Wang. The day pillar is the anchor — the year, month, and hour pillars are read against it.

Worked example: a 庚午 day pillar. Locate 庚午 in the sexagenary cycle — it sits in the 甲子旬 (甲子, 乙丑, 丙寅, 丁卯, 戊辰, 己巳, 庚午, 辛未, 壬申, 癸酉). Those ten cycles use the branches 子丑寅卯辰巳午未申酉, leaving 戌 and 亥 with no stem to pair with. Therefore: a 庚午 day chart has 戌亥空.

A second example, from the other end of the wheel: a 壬辰 day pillar falls in the 甲申旬 (甲申, 乙酉, 丙戌, 丁亥, 戊子, 己丑, 庚寅, 辛卯, 壬辰, 癸巳), which consumes 子丑寅卯辰巳午申酉 — so 壬辰 day has 午未空.

Then walk your other three pillars. If 戌 or 亥 appears as a branch anywhere in the year, month, or hour pillar, that branch is void.

3. The Six JiaXu Void Branches — Complete Table

| 旬 (Cycle) | Ten Cycles Cover | Void Branches 空亡 | Zheng (Yang stems) | Pang (Yin stems) | | --- | --- | --- | --- | --- | | 甲子旬 | 甲子 – 癸酉 | 戌亥 | 戌 | 亥 | | 甲戌旬 | 甲戌 – 癸未 | 申酉 | 申 | 酉 | | 甲申旬 | 甲申 – 癸巳 | 午未 | 午 | 未 | | 甲午旬 | 甲午 – 癸卯 | 辰巳 | 辰 | 巳 | | 甲辰旬 | 甲辰 – 癸丑 | 寅卯 | 寅 | 卯 | | 甲寅旬 | 甲寅 – 癸亥 | 子丑 | 子 | 丑 |

A useful memory method: start from your day branch and count forward through the sexagenary cycle until the stem 癸 appears. The two branches immediately after 癸 are your Kong Wang; the branch after those is your next 旬 head.

4. Zheng Kong Wang vs. Pang Kong Wang (正空亡 / 旁空亡)

Each void pair splits into one proper void and one secondary void, decided purely by the yin/yang polarity of your day stem. Classical texts (Sanming Tonghui / 三命通會) state the rule as 五阳令用一阳，五阴令用一阴:

• Yang day stems (甲 丙 戊 庚 壬) take the first (yang-polarity) branch as the Zheng void. A 甲子-day chart uses 戌; the 亥 is secondary.
• Yin day stems (乙 丁 己 辛 癸) take the second (yin-polarity) branch as the Zheng void. A 乙丑-day chart uses 亥; the 戌 is secondary.

Both examples above sit in 甲子旬, where the Yang stems 甲丙戊庚壬 sit on 甲子, 丙寅, 戊辰, 庚午, 壬申 and the Yin stems 乙丁己辛癸 sit on 乙丑, 丁卯, 己巳, 辛未, 癸酉.

The traditional reading assigns different subject matter to the two: Zheng Kong Wang events tend to fall on the person themselves; Pang Kong Wang events tend to involve close relatives.

5. What Does Kong Wang Actually Do in a Chart?

It suspends a branch from taking part in its surrounding combinations, clashes, punishments, and harms — it does not delete it. This is the single most important correction to the popular idea that a void branch "isn't there."

Its hidden stems (藏干) remain, its elemental weight remains, and its Ten Gods remain. The closer analogy is a phone in airplane mode: the hardware is intact and the software still works, but it is not currently receiving signals. When the mode is switched off — in BaZi language, when the branch is filled in (ti shi 填實) or clashed into (chong shi 沖實) — it resumes operating at full strength.

Classical texts describe this element by element:

金空則響，火空則明，水空則清，木空則折，土空則崩。 Metal voided rings out, fire voided shines bright, water voided runs clear, wood voided snaps, earth voided collapses.

Note the word 響 — ringing out. Sanming Tonghui is explicit that a voided auspicious star (祿, 馬, 財, 官) disperses that gathering force and weakens it, while a voided inauspicious star is dissolved and softened. And it warns twice against one-sided judgment: 空而無實，亡而有存，所以未可便為凶論 — void without substance,亡 yet possessing existence — therefore you may not immediately call it inauspicious. Void combined with punishment, clash, and harm can even help, because the void absorbs the pressure.

6. Which Pillar Does Your Kong Wang Fall On?

The pillar tells you which life domain the suspension is expressed in. Traditional sources attach both a life domain and an age band to each position:

| Void Position | Traditional Domain | Traditional Age Band | | --- | --- | --- | | Year pillar 年柱 | Ancestors, ancestral inheritance, early home environment | 1–16 | | Month pillar 月柱 | Parents, siblings, career environment, social circle | 17–32 | | Day pillar 日柱 | Spouse palace, marriage, daily emotional life | 33–48 | | Hour pillar 時柱 | Children, late life, legacy | 49+ |

The reading is two-directional, not fatalistic. A void year branch is often read as thin ancestral support — and in practice many such charts describe people who built themselves early and independently, because inherited resources were never really the main source. A void month branch can mean a career environment that does not strongly pull on you — protective in messy workplaces, but a genuine discount if that branch was supposed to be supplying your Yong Shen. A void day branch concerns the spouse palace; a void hour branch concerns children and later life.

Always ask the prior question: is the void branch carrying your Day Master's roots, or your Yong Shen, or an unfavourable element? If it carries your useful element, you have a discount on your support and you will want to replenish that element through luck cycles and daily practice. If it carries an unfavourable element, the void is a temporary shield.

7. When Does Kong Wang Get Filled In? (填實)

A void branch stops being void the moment a luck pillar or annual branch reaches it — and classical texts add an important caveat about ordering.

The four standard situations:

1. Void branch absent from the natal chart. If your Kong Wang never appears in your four pillars, it stays theoretical until a 10-year Luck Pillar (大運) brings it in — and it is only genuinely filled when an annual year (流年) reaches it.
2. Void branch present in the natal chart. A Luck Pillar branch can fill it directly, and from then on it acts on its own sitting stem.
3. Void branch met with combination or clash by the annual branch. 合冲 both fill it. Neither combination nor clash by the year means it stays suspended.
4. The special case: when the year pillar and day pillar swap voids. If your year branch falls in a different 旬's void than your day branch, and the two voids cross-reference each other, classical texts treat this as among the heavier configurations — 以實為空則實可映空.

And when there is no clash, no combination, and no punishment at all, that is called 真空亡 (true void) — the most settled suspension.

A caution repeated by the classical texts: if your Luck Pillar is itself void, it barely reaches your natal chart; the annual year then bypasses the luck pillar and strikes the natal chart directly. That ten-year tone often flips in ways you did not predict.

8. Four Secondary Concepts: Gu Xu, Lu Ru Kong Wang, and the Four Great Voids

Three related ideas complete the classical treatment.

Gu Xu (孤虛) — the branch that clashes a void branch. If 戌亥 are your void, then 辰巳 are your 孤虛, because 辰戌 and 巳亥 are six-position clashes. Sources describe 孤虛 falling on a pillar as a defect in that area of life.

Lu Ru Kong Wang (祿入空亡) — when the day master's own 祿 position (禄, its resting/base position) is swallowed by that chart's void branches, so 建禄 never properly forms and the Day Master loses one of its main roots.

Sanqu Ming Tonghui quotes the mnemonic from Bazi Jinshu (八字金書): 「甲寅旬、壬癸落空亡；甲辰旬，甲乙；甲申旬，丙丁；甲戌旬，庚辛。」 — and then adds that some schools call this configuration 十惡大敗 (the Ten Great Adversities). Be aware this traditional table is quoted rather than derived, and schools differ on how strictly to apply it.

For the mechanically verifiable version, use the standard 祿 positions — 甲祿寅, 乙祿卯, 丙祿巳, 丁祿午, 戊祿巳, 己祿午, 庚祿申, 辛祿酉, 壬祿亥, 癸祿子 — and check which fall inside each cycle's void pair:

| 旬 | Void Branches | Stems whose 祿 falls into void | | --- | --- | --- | | 甲子旬 | 戌亥 | 壬 (祿 in 亥) | | 甲戌旬 | 申酉 | 庚, 辛 | | 甲申旬 | 午未 | 丁, 己 | | 甲午旬 | 辰巳 | 丙, 戊 | | 甲辰旬 | 寅卯 | 甲, 乙 | | 甲寅旬 | 子丑 | 癸 (祿 in 子) |

The Four Great Voids (四大空亡) — a Na Yin (納音) level void rather than a branch-level one. The mnemonic is: 甲子并甲午，旬中水流絕，甲寅與甲申，金氣杳難求. Checking all six cycles confirms it: the 甲子旬 and 甲午旬 contain no Water Na Yin, and the 甲寅旬 and 甲申旬 contain no Metal Na Yin; 甲戌旬 and 甲辰旬 contain all five elements. A chart only counts as having a Four Great Void when both the Na Yin of the year or day pillar falls in the gap and the element is genuinely absent from the chart.

Key Takeaways

• Kong Wang is calendar arithmetic, not mysticism. Ten stems cannot pair evenly with twelve branches, so every 旬 leaves two branches unmatched.
• The day pillar is the anchor. Find your 旬, read off its two void branches, then look for them in your other three pillars.
• Six cycles, six void pairs: 甲子旬→戌亥, 甲戌旬→申酉, 甲申旬→午未, 甲午旬→辰巳, 甲辰旬→寅卯, 甲寅旬→子丑.
• Polarity splits the pair. Yang day stems take the yang branch as Zheng Kong Wang; yin day stems take the yin branch. Zheng events tend to land on you, Pang events on close relatives.
• Void suspends, it does not delete. Hidden stems, elements, and Ten Gods stay intact. It behaves like airplane mode until a luck cycle switches it back on.
• Direction matters more than the fact. A voided unfavourable element is a temporary shield; a voided Yong Shen is a real discount worth repairing.
• Check the Luck Pillar before you check the year. If the luck pillar is void, the year reaches your natal chart directly.

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中文

空亡（Kong Wang）是六十甲子每一旬十組干支配對之後，剩下來沒有天干可配的那兩個地支。 在八字中，只有這一對地支對該張命盤而言是「空」的。它是命理界最多人問、也最多被誤解的概念之一——而且它本身並不是一般神煞那樣帶有吉凶色彩的字。

1. 為什麼會有兩個地支「空掉」？

因為十天干無法與十二地支平均配對。 天干（甲乙丙丁戊己庚辛壬癸）與地支（子丑寅卯辰巳午未申酉戌亥）依序配對，10 與 12 的最小公倍數是 60，也就是完整的六十甲子循環。把 60 分成六組、每組十組，每組用掉十個地支，就恰好剩下兩個落單的。

這兩個落單的地支古稱「孤」——有支而無干。這不是神秘學，而是中國曆法的算術結果，每一張命盤都從自己的日柱繼承了這個結構。

2. 空亡怎麼查？（實戰步驟）

先看日柱，判斷日柱屬於六旬中的哪一旬，該旬剩下的兩個地支就是你的空亡。 日柱是錨點，年柱、月柱、時柱都要拿來「對照」它。

範例一：庚午日。在六十甲子中找到庚午，它落在甲子旬（甲子、乙丑、丙寅、丁卯、戊辰、己巳、庚午、辛未、壬申、癸酉）。這一旬用掉了子丑寅卯辰巳午未申酉，戌與亥沒有天干可配，所以庚午日空戌亥。

範例二：壬辰日。壬辰落在甲申旬（甲申、乙酉、丙戌、丁亥、戊子、己丑、庚寅、辛卯、壬辰、癸巳），這一旬用掉子丑寅卯辰巳午申酉，因此壬辰日空午未。

接著走查其他三柱。只要戌或亥出現在年支、月支或時支，該支就是空亡。

3. 六甲旬空完整對照表

| 旬 | 旬內十組 | 空亡地支 | 陽干（正空亡） | 陰干（正空亡） | | --- | --- | --- | --- | --- | | 甲子旬 | 甲子 – 癸酉 | 戌亥 | 戌 | 亥 | | 甲戌旬 | 甲戌 – 癸未 | 申酉 | 申 | 酉 | | 甲申旬 | 甲申 – 癸巳 | 午未 | 午 | 未 | | 甲午旬 | 甲午 – 癸卯 | 辰巳 | 辰 | 巳 | | 甲辰旬 | 甲辰 – 癸丑 | 寅卯 | 寅 | 卯 | | 甲寅旬 | 甲寅 – 癸亥 | 子丑 | 子 | 丑 |

記憶口訣：從日支起，順數干支直到天干「癸」出現，癸之後的兩個地支就是空亡，再下一個地支就是下一個旬首。

4. 正空亡與旁空亡

這一對空亡會依照日干的陰陽，拆成一個「正空亡」與一個「旁空亡」。《三命通會》講得很直接：「五陽令用一陽，五陰令用一陰。」

• **陽干（甲 丙 戊 庚 壬）**取陽性的那一支為正空亡。甲子日以戌為正空亡，亥為旁空亡。
• **陰干（乙 丁 己 辛 癸）**取陰性的那一支為正空亡。乙丑日以亥為正空亡，戌為旁空亡。

傳統上兩者主事不同：正空亡的事多落在自己身上，旁空亡的事多牽涉至親。

5. 空亡在命局中到底「做」什麼？

它讓一個地支暫時不參與周圍的刑沖合害，而不是把它刪掉。 這是對「空亡＝不存在」這個流行誤解最重要的修正。

藏干還在、五行力量還在、十神還在。最貼近的比喻是手機開了飛行模式：硬體完好、軟體仍可運作，只是暫時收不到訊號。當飛行模式解除——命理上稱為填實（沖實或合實）——這個地支立刻恢復完整運作。

古籍按五行分述其性：

金空則響，火空則明，水空則清，木空則折，土空則崩。

注意「響」這個字。《三命通會》也說明：祿、馬、財、官等吉神逢空，聚集之力被散去、減弱；惡煞凶神逢空，反而被化解、被軟化。 並連續兩次提醒不可片面論斷：「空而無實，亡而有存，所以未可便為凶論。」空亡若同時遇上刑沖破害，甚至能發揮化解作用。

6. 空亡落在哪一柱？

柱位決定這個「暫停」表現在哪個人生領域。 傳統上每個位置都對應一個領域與一段年齡：

| 空亡位置 | 傳統主事 | 傳統年齡 | | --- | --- | --- | | 年柱 | 祖業、祖蔭、早年家庭環境 | 1–16 | | 月柱 | 父母、手足、事業環境、社交圈 | 17–32 | | 日柱 | 配偶宮、婚姻、日常情感 | 33–48 | | 時柱 | 子女、晚年、傳承 | 49+ |

解讀是雙向的，不是宿命。年支空亡常被讀作祖蔭較薄——實務上，這類命盤的人往往很早就學會自立，因為繼承來的資源本來就不是主要來源。月支空亡可能意味著職場環境對你引力較弱——在複雜環境裡這是保護，但如果該支本來要提供你的用神，那就是實質的減分。日支空亡關乎配偶宮，時支空亡關乎子女與晚年。

但永遠要先問一個更前面的問題：這個空亡地支，承載的是日主的根、你的用神，還是不利的五行？ 如果是用神，你等於少了助力，需要靠大運流年與日常補回來；如果是不利五行，空亡反而是一道暫時的防護。

7. 空亡什麼時候被沖實？（填實）

大運或流年碰到這個地支，空亡就不再空——但古籍對「順序」有明確要求。

四種標準情況：

1. 原局不現空亡字：始終停留在理論層面，直到某步大運把它帶進來；真正「填實」要等流年到位。
2. 原局有該空亡字：大運地支可以直接把它填實，之後它就能作用於自己坐下的天干。
3. 原局有空亡字，流年與之合或沖：合、沖皆為填實；流年不合不沖，則仍按空論。
4. 日柱與年柱「互換空亡」：若年支落在另一旬的空亡、而空亡又反過來指向日柱，古籍視為較重的格局——以實為空，則實可映空。

若完全沒有沖、合、刑，就稱為真空亡，是最安定的暫停。

另有一條反覆出現的提醒：若大運本身空亡，該大運地支幾乎作用不到原局，這時流年會越過大運、直接作用於原局。這十年的基調常會出現出人意表的反轉。

8. 三個延伸概念：孤虛、祿入空亡、四大空亡

孤虛（孤虛）——與空亡相沖的那一支。戌亥空，則辰巳為孤虛，因為辰戌沖、巳亥沖。古籍說孤虛落在哪一柱，那個領域多有缺陷。

祿入空亡——日主的祿位（禄，自身的根本棲位）被該張命盤的空亡地支吞掉，導致建祿無法成立，日主失去主要根氣之一。

《三命通會》引《八字金書》口訣：「甲寅旬、壬癸落空亡；甲辰旬，甲乙；甲申旬，丙丁；甲戌旬，庚辛。」並指出部分派別將此格局稱為十惡大敗。需注意這份傳統對照表屬於「引用」而非推導，各派適用寬嚴不一。

若要做機械可驗證的版本，用標準祿位——甲祿寅、乙祿卯、丙祿巳、丁祿午、戊祿巳、己祿午、庚祿申、辛祿酉、壬祿亥、癸祿子——對照各旬空亡即可：

| 旬 | 空亡地支 | 祿入空亡的天干 | | --- | --- | --- | | 甲子旬 | 戌亥 | 壬（祿在亥） | | 甲戌旬 | 申酉 | 庚、辛 | | 甲申旬 | 午未 | 丁、己 | | 甲午旬 | 辰巳 | 丙、戊 | | 甲辰旬 | 寅卯 | 甲、乙 | | 甲寅旬 | 子丑 | 癸（祿在子） |

四大空亡——這是納音層級的空亡，而非地支層級。口訣：「甲子并甲午，旬中水流絕，甲寅與甲申，金氣杳難求。」逐一核對六旬確實如此：甲子旬與甲午旬完全沒有水的納音，甲寅旬與甲申旬完全沒有金的納音；甲戌旬與甲辰旬五行俱全。只有當年柱或日柱的納音落在這個缺口且該五行在命局中確實缺失時，才算犯了四大空亡。

重點整理

• 空亡是曆法算術，不是玄學。 十天干無法與十二地支平均配對，每一旬必然剩兩支落單。
• 日柱是錨點。 找出所屬旬 → 讀出兩個空亡地支 → 走查其餘三柱。
• 六旬六組空亡：甲子旬→戌亥、甲戌旬→申酉、甲申旬→午未、甲午旬→辰巳、甲辰旬→寅卯、甲寅旬→子丑。
• 陰陽把一對拆成兩半。 陽干取陽支為正空亡，陰干取陰支；正空亡的事落在自己，旁空亡的事落在至親。
• 空是暫停，不是刪除。 藏干、五行、十神都還在，像飛行模式，直到大運把訊號接回來。
• 方向比事實更重要。 忌神逢空是暫時的盾；用神逢空是真實的缺口，必須補。
• 先看大運，再看流年。 大運若空，流年會直接作用原局。

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Frequently Asked Questions

How Do I Find My Kong Wang (空亡) in Two Steps?

Take your day pillar and find which of the six 旬 it belongs to. Then read the void branches off that row: 甲子旬 → 戌亥, 甲戌旬 → 申酉, 甲申旬 → 午未, 甲午旬 → 辰巳, 甲辰旬 → 寅卯, 甲寅旬 → 子丑. Example: a 庚午 day sits in 甲子旬, so 戌亥 are void. Finally, scan your year, month, and hour branches — any of them matching those two characters is a void branch in your chart.

Is a Kong Wang Branch Really "Nothing"? Does It Disappear?

No. A void branch is suspended, not deleted. Its hidden stems (藏干), its elemental weight, and its Ten Gods all remain exactly as they were; it simply does not currently participate in the combinations, clashes, punishments, and harms around it. Think of airplane mode: the device is intact and the software still works, it just isn't receiving signals. When a luck pillar or annual branch fills it in (填實), it resumes at full strength — which is why void branches often become the most active part of a chart in the exact year they are filled.

Does Kong Wang Mean Bad Luck?

Not by itself — it depends entirely on what the void branch was carrying. A voided unfavourable element is a temporary shield, since classical sources hold that 空亡 dissolves inauspicious stars. A voided Yong Shen (用神) or Day Master root is a genuine discount on your support, and worth repairing through matching elements in your luck cycles and daily life. The classical texts explicitly warn against one-sided judgment: 空而無實，亡而有存，所以未可便為凶論 — void without substance cannot simply be called inauspicious. The pillar also narrows the meaning: year for ancestors and early life (1–16), month for parents and career (17–32), day for the spouse palace (33–48), hour for children and late life (49+).

What Is the Difference Between Zheng Kong Wang and Pang Kong Wang?

Each void pair splits by the polarity of your day stem. Yang day stems (甲 丙 戊 庚 壬) take the yang-polarity branch as Zheng Kong Wang — a 甲子 day uses 戌; yin day stems (乙 丁 己 辛 癸) take the yin-polarity branch — a 乙丑 day uses 亥. The other branch in each case is the Pang (secondary) void. Traditional sources assign the Zheng void to matters that land on the person themselves, and the Pang void to matters involving close relatives.

When Does Kong Wang Stop Being Void?

When a luck pillar or annual branch reaches it — with one important ordering caveat. If the void branch never appears in your natal chart, a 10-year Luck Pillar bringing it in still counts as void until an annual year fills it. If it is in your natal chart, a Luck Pillar can fill it directly. A year that combines or clashes the branch also fills it (合沖皆為填實). But if the year neither combines nor clashes, the branch stays suspended. And if your Luck Pillar is itself void, it barely touches your natal chart — the annual year then bypasses it and strikes the natal chart directly, which is when ten-year patterns tend to flip unexpectedly.

常見問題

兩步算出自己的空亡

第一步：看日柱，判斷它屬於六旬中的哪一旬。第二步：從對照表讀出該旬的空亡地支——甲子旬→戌亥、甲戌旬→申酉、甲申旬→午未、甲午旬→辰巳、甲辰旬→寅卯、甲寅旬→子丑。例如庚午日屬甲子旬，所以空戌亥。最後走查年支、月支、時支，凡是出現這兩個字的地支，就是你命局中的空亡。

空亡的地支真的「什麼都沒有」嗎？

不是。空亡是暫停，不是刪除。藏干、五行力量、十神全部原封不動保留，它只是暫時不參與周圍的刑沖合害。比喻就是手機的飛行模式：硬體完好、軟體可運作，只是收不到訊號。當大運或流年把它沖實（填實），它立刻恢復完整運作——也正因如此，命局中的空亡支，往往正是在被沖實的那一年表現力最強。

空亡代表壞運嗎？

單看空亡本身不算吉凶，要看這個地支原本承載什麼。 忌神逢空是暫時的護盾，因為古籍認為空亡能化解凶煞；用神（用神）或日主根氣逢空，就是實質的助力減損，值得用同類五行在大運與日常生活中補回。古籍也明確反對片面論斷：「空而無實，亡而有存，所以未可便為凶論。」柱位同樣會縮小範圍：年柱主祖蔭與早年（1–16）、月柱主父母與事業（17–32）、日柱主配偶宮（33–48）、時柱主子女與晚年（49+）。

正空亡與旁空亡有什麼不同？

這一對空亡會依日干的陰陽拆開。陽干（甲 丙 戊 庚 壬）取陽性的那支為正空亡——甲子日以戌為正；陰干（乙 丁 己 辛 癸）取陰性的那支——乙丑日以亥為正。另一支則為旁空亡。傳統上，正空亡主事多落在自己身上，旁空亡則多牽涉至親。

空亡什麼時候會「不空」？

大運或流年碰到它就會被填實，但順序有明確講究。 若原局根本不現該空亡字，大運帶進來仍以空論，要等流年到位才算真正填實；若原局已有該字，大運地支可直接填實；流年與之合或沖也算填實，但流年不合不沖則維持空論。另外有一條關鍵細節：若大運本身空亡，它幾乎作用不到原局，這時流年會越過大運直接作用原局——十年的基調常因此出現意料之外的反轉。