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BaZi Fundamentals.

Core vocabulary for reading any chart — structural intelligence about how you command, where you weaken, and what the field supports. Not fortune-telling.

Day Master

The Day stem (日主) is your command identity. Everything else is read relative to it.

  • Strong — carries pressure, initiates; risk overextension
  • Weak — wins through allies and timing; risk burnout in head-on fights
  • Balanced — flexible; success depends on phase, not force

Five Elements

Wood

Momentum, initiation

Fire

Visibility, speed

Earth

Stability, ground

Metal

Precision, structure

Water

Adaptation, flow

Production: Wood → Fire → Earth → Metal → Water → Wood. Control: Wood → Earth → Water → Fire → Metal → Wood.

Excess = overused strength. Deficiency = gap to cover by skill, partner, or timing.

Animal Branches

Twelve branch animals (地支) modify terrain — not horoscope personality. Month branch sets seasonal context.

BranchAnimalElementTactical read
子 ZǐRatWaterCovert movement, intel
丑 ChǒuOxEarthEndurance, holding ground
寅 YínTigerWoodBold entry, shock initiative
卯 MǎoRabbitWoodIndirect approach, diplomacy
辰 ChénDragonEarthReserves, transformation
巳 SìSnakeFirePatience, concealed strike
午 WǔHorseFireSpeed, open confrontation
未 WèiGoatEarthAlliance, negotiation ground
申 ShēnMonkeyMetalPivots, adaptability
酉 YǒuRoosterMetalPrecision, audit
戌 XūDogEarthDefense, gatekeeping
亥 HàiPigWaterDepth, long-horizon position

Ten Gods

Ten Gods (十神) classify stems relative to your Day Master — functions, not moral labels.

Ten GodHanTactical function
Friend比肩Peer support — also rivalry for same ground
Rob Wealth劫财Competition for resources, aggressive allies
Indirect Resource偏印Unconventional support, niche expertise
Direct Resource正印Stable backing, credentials, recovery
Eating God食神Sustainable output, morale
Hurting Officer伤官Disruption, sharp speech — visibility risk
Indirect Wealth偏财Opportunistic gains, fast capital
Direct Wealth正财Stable income, owned assets
Seven Killings七杀Extreme pressure, crisis command
Direct Officer正官Structure, rank, legitimate authority

Useful & Unfavorable Elements

Useful elements (用神) reinforce; unfavorable (忌神) amplify imbalance under pressure — neither is inherently bad.

  • Weak Day Master — favor producing/matching elements; reduce controlling/draining ones
  • Strong Day Master — favor output and wealth; too much reinforcement creates rigidity
  • Season — month branch sets temperature; useful elements shift with season and phase

Structural Rules

  • Seasonal strength — elements gain/lose power by birth month
  • Rooting — stems with branch support act with follow-through
  • Combinations & clashes — merges bind; clashes force movement
  • Hidden stems — branches contain sub-elements
  • Luck phases — 10-year pillars shift the field
  • Relative reading — every symbol read against Day Master strength and current phase

Next: Read Your Chart · BaZiWar Principles