Chapter 1: Bazi Basics

Heavenly Stems, Earthly Branches, and Five Elements

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Heavenly Stems & Earthly Branches

Ten Heavenly Stems

The Ten Heavenly Stems are: 甲、乙、丙、丁、戊、己、庚、辛、壬、癸.

Wood Yang
Wood Yin
Fire Yang
Fire Yin
Earth Yang
Earth Yin
Metal Yang
Metal Yin
Water Yang
Water Yin

Twelve Earthly Branches

The Twelve Earthly Branches are: 子、丑、寅、卯、辰、巳、午、未、申、酉、戌、亥.

Water
Earth
Wood
Wood
Earth
Fire
Fire
Earth
Metal
Metal
Earth
Water

Five Elements Theory

The Five Elements are Wood, Fire, Earth, Metal, and Water. They interact through generating and overcoming relationships.

Generating Cycle

Wood → Fire → Earth → Metal → Water → Wood

Overcoming Cycle

Wood overcomes Earth → Earth overcomes Water → Water overcomes Fire → Fire overcomes Metal → Metal overcomes Wood

Memory tip: Generating describes "what nourishes me" and "what I nourish"; overcoming describes "what restrains me" and "what I restrain".

Element Attributes of Stems & Branches

Each stem and branch corresponds to an element attribute. This mapping is fundamental for Bazi analysis.

Stems and Elements

  • Jia/Yi belong to Wood (Jia is Yang Wood, Yi is Yin Wood)
  • Bing/Ding belong to Fire (Bing is Yang Fire, Ding is Yin Fire)
  • Wu/Ji belong to Earth (Wu is Yang Earth, Ji is Yin Earth)
  • Geng/Xin belong to Metal (Geng is Yang Metal, Xin is Yin Metal)
  • Ren/Gui belong to Water (Ren is Yang Water, Gui is Yin Water)

Branches and Elements

  • Yin/Mao belong to Wood (Yin is Yang Wood, Mao is Yin Wood)
  • Si/Wu belong to Fire (Si is Yin Fire, Wu is Yang Fire)
  • Chen/Xu/Chou/Wei belong to Earth (Chen/Xu are Yang Earth, Chou/Wei are Yin Earth)
  • Shen/You belong to Metal (Shen is Yang Metal, You is Yin Metal)
  • Hai/Zi belong to Water (Hai is Yin Water, Zi is Yang Water)