藏干的力量真的有区别吗？本气和余气差多少？

差别非常大。本气大约占地支总力量的60%，中气约30%，余气仅约10%。举例来说，寅中甲木（本气）的力量远超戊土（余气）。在实际论命中，余气通常只有在透干或被其他因素加强时才需要重点考虑。

子、卯、酉为什么只藏一个天干？

子、卯、酉是"四正"位中的三个（午也属四正但藏两个），它们代表的五行能量最纯粹、最集中。子是纯水、卯是纯木、酉是纯金，没有杂气干扰。这种纯粹性在分析中意味着力量方向最明确，不存在内部矛盾。

藏干和十神的关系是什么？

藏干是十神分析的基础。命盘中的十神不仅来自四个天干之间的关系，更来自地支藏干与日主的关系。一个看似命盘中没有正财的人，可能在地支藏干中有多个正财暗藏。完整的十神分析必须包含藏干，否则会遗漏大量信息。详见我们的[十神详解文章](/bazi/blog/bazi-ten-gods-explained)。

四库的"冲开"是什么意思？

四库（辰戌丑未）像是一个封闭的仓库，里面的藏干力量处于"封存"状态。当遇到对冲的地支（如辰遇戌、丑遇未），就像打开了仓库的门，里面储存的五行力量被释放出来。这在大运流年分析中极为重要——某些年份突然"冲开"了你命中的库，可能带来巨大变化。

怎么快速记住十二地支的藏干？

建议分组记忆：先记四正（子癸、卯乙、午丁己、酉辛），它们最简单；再记四生（寅甲丙戊、申庚壬戊、巳丙庚戊、亥壬甲），注意四生都含戊土；最后记四库（辰戊乙癸、戌戊辛丁、丑己癸辛、未己丁乙），四库都以土为本气。每天翻看几遍，一周即可熟练。

BaZi Hidden Stems: The 12 Earthly Branches Cang Gan Table & Rules

Hidden stems (藏干, cang gan) are one of the most overlooked yet essential concepts in BaZi analysis. Every Earthly Branch contains one to three concealed Heavenly Stems that determine the full distribution of ten gods, the validity of chart patterns, and the actual impact of luck periods. If you only read the four visible Heavenly Stems, you are seeing just half the picture.

What Are Hidden Stems?

The twelve Earthly Branches are not simple symbols — each is a container of Five Element energy storing different Heavenly Stem forces within. The Zi Ping Zhen Quan (子平真诠) states: "Heavenly Stems move without resting; Earthly Branches remain still and constant." While stems are overt and dynamic, branch energy is internal and accumulated. Hidden stems are precisely this stored energy.

The Complete Hidden Stems Table

Each branch contains a principal qi (本气, strongest), middle qi (中气, moderate), and residual qi (余气, weakest):

| Branch | Principal | Middle | Residual | Element | |--------|-----------|--------|----------|---------| | Zi (子) | Gui (癸) | — | — | Water | | Chou (丑) | Ji (己) | Gui (癸) | Xin (辛) | Earth | | Yin (寅) | Jia (甲) | Bing (丙) | Wu (戊) | Wood | | Mao (卯) | Yi (乙) | — | — | Wood | | Chen (辰) | Wu (戊) | Yi (乙) | Gui (癸) | Earth | | Si (巳) | Bing (丙) | Geng (庚) | Wu (戊) | Fire | | Wu (午) | Ding (丁) | Ji (己) | — | Fire | | Wei (未) | Ji (己) | Ding (丁) | Yi (乙) | Earth | | Shen (申) | Geng (庚) | Ren (壬) | Wu (戊) | Metal | | You (酉) | Xin (辛) | — | — | Metal | | Xu (戌) | Wu (戊) | Xin (辛) | Ding (丁) | Earth | | Hai (亥) | Ren (壬) | Jia (甲) | — | Water |

The four cardinal branches (Zi, Mao, You) contain only one stem — their energy is purest. The four storage branches (Chen, Xu, Chou, Wei) each contain three stems, making them the most complex.

Stem Transparency: From Hidden to Visible

A hidden stem becomes powerful when it "emerges" (透干) — appearing in the Heavenly Stem positions. The Di Tian Sui (滴天髓) explains: "Stems concealed within branches have subtle power, awaiting emergence to manifest their strength."

- Hidden but not emerged: Influence exists but remains latent - Hidden and emerged: Power amplifies significantly - Emerged with root: The stem gains a solid foundation in the branch

Hidden Stems in Ten-God Analysis

Complete ten-god analysis requires examining hidden stems. A chart might appear to lack Direct Wealth on the surface, yet contain multiple instances within the branches. The process involves listing all hidden stems from all four branches, then calculating ten-god relationships with the Day Master.

Want to discover your hidden ten gods? Try our free chart calculator → to see every hidden stem mapped automatically.

Hidden Stems in Pattern Determination

Pattern identification fundamentally depends on hidden stems. The Zi Ping Zhen Quan directs: "For the useful god, look exclusively to the month branch. Take what is stored within it, matched against the Day Master."

The method: check which hidden stem of the month branch emerges in the Heavenly Stems — that stem determines the pattern. If none emerges, default to the principal qi.

The Four Storage Branches

Chen, Xu, Chou, and Wei are called "storages" or "graves." Their hidden stems are locked away until activated by a clash. For example, when Xu clashes Chen, the Gui water stored inside Chen is released. This mechanism drives many of the dramatic shifts people experience during certain luck periods.

Practical Tips

1. Start with the four cardinal branches — their single stem makes analysis straightforward 2. Always prioritize the month branch hidden stems for pattern work 3. Track which hidden stems emerge in the Heavenly Stems — these are your analytical focus 4. Monitor storage clashes in luck periods — they release stored energy 5. Accumulation matters — a stem appearing in multiple branches builds force

Ready to explore your chart's hidden stems? Our AI-powered BaZi calculator reveals every concealed element in your Four Pillars.

Frequently Asked Questions

Do hidden stems really differ in power?

Yes, significantly. The principal qi carries roughly 60% of the branch's force, middle qi about 30%, and residual qi around 10%. In practice, residual qi only matters when it emerges in a stem position or receives reinforcement from other chart elements.

Why do Zi, Mao, and You contain only one stem?

These are cardinal positions representing pure elemental energy — Zi is pure Water, Mao is pure Wood, You is pure Metal. Their concentration means the energy direction is unambiguous, with no internal conflict from mixed elements.

How do hidden stems relate to ten gods?

Hidden stems are the foundation of ten-god analysis. The ten gods in a chart come not only from the four visible stems but from every hidden stem's relationship with the Day Master. A thorough reading identifies all hidden ten-god instances to build a complete picture. See our ten gods guide for more.

What does it mean to "clash open" a storage branch?

The four storage branches (Chen, Xu, Chou, Wei) keep their hidden stems in a dormant state. When an opposing branch arrives via clash (e.g., Xu clashes Chen), the stored energy is released — sometimes dramatically changing a person's circumstances during that period.