Yin-Wu-Xu Fire Trine (寅午戌火局)
Learn the Yin-Wu-Xu Fire trine, how heat, season, roots, storage, clashes, and competing meetings determine its formation and practical force.
Overview
Yin–Wu–Xu forms the canonical Fire Three-Harmony group: Yin is the birth stage, Wu the cardinal center, and Xu the storage stage. The three distinct branches establish the full structure. Summer command, Fire roots and exposure, temperature, continuity, and clash damage decide whether Fire becomes dominant or the branches retain mixed functions.
At a glance
- Members
- Yin, Wu, and Xu
- Roles
- Birth, cardinal, and storage stages
- Support
- Summer command, Fire roots, exposure, and viable heat
- Boundary
- More heat can also create imbalance
- Center
- Wu is the cardinal center and anchors the Fire direction
- Interference
- Clash, punishment, harm, break, and competing groups remain visible
Require the complete three-member set
Confirm Yin, Wu, and Xu as distinct branches and list their pillars.
A period branch can complete the group temporarily but cannot rewrite the natal chart.
- Verify all three branches.
- Mark chart layers.
Evaluate Fire without assuming heat is useful
Summer command, rooted Fire, exposure, and Wood supply can strengthen the route.
Excess heat, dryness, Water control, or lack of continuity may change the net value.
- Assess support and excess.
- Include climate balance.
Resolve clashes and competing meetings
Yin may clash Shen, Wu may clash Zi, and Xu may clash Chen.
Each branch can enter seasonal meetings or other harmonies, which must remain visible.
- Map every competing relation.
- Publish residual force.
Do not convert Fire into a life verdict
寅午戌火局 cannot alone prove fame, anger, leadership, heart disease, accident, or success.
Use it as phase-structure evidence only.
- No temperament diagnosis.
- No medical or event claim.
Sources and editorial basis
- 《三命通會》 (Sanming Tonghui)《三命通會》卷二地支三合：寅午戌以寅生、午旺、戌墓構成火局，須兼察寒暖燥濕A historical compilation covering stems and branches, Ten Gods, Nayin, Shen Sha, and multiple classical pattern systems.
- 《淵海子平》 (Yuanhai Ziping)《淵海子平》三合局諸論：寅午戌火局以中神午為核心，成局仍受月令、根氣和沖破限制A foundational Ziping reference for branch months, hidden stems, roots, and stem-branch relationships.
- OpenFate Editorial Methodology寅午戌火局頁分開三支共現、火勢增強、化局主導和燥烈副作用，不把火局固定判吉或凶OpenFate separates deterministic chart calculation, traditional interpretation, and modern editorial explanation.