亥

About

亥 (Hài, the Pig branch) is the 12th of the 12 Earthly Branches (地支) — Water element, Winter. Hidden stems: 壬 (main), 甲. Six Harmony: 寅亥合木 (whether it fully transforms depends on chart context). Three Harmony: 亥卯未 → Wood. Clash: 巳亥沖 (direct clash). Penalty: 亥刑亥 (self-penalty). Harm: 申亥害.⁠‌​​‌​‌‌‌‌​​‌‌‌‌​‌​​‌​‌‌​‌‌​‌​​‌​‌​​​‌‌‌‌‌​​‌​‌‌​‌​​‌‌​​​‌‌​​​‌​‌‌‌​​‌‌​‌‌‌​​‌‌‌‌‌‌​​‌‌​‌‌‌​​‌​​‌‌‌​‌​​‌​‌‌​​‌‌‌‌‌‌​​‌​​​‌‌​‌​​‌​‌‌​​‌‌‌​‌‌​​‌​​​⁠

亥 is the Pig — the first month of winter (孟冬) and the double-hour 21:00–23:00, when the household settles toward sleep. A "growth" branch (四生) and the last of the twelve, it holds 壬 Yang Water as its main stem with 甲 wood stored beside it. In the Wood triad 亥卯未, 亥 is where Wood is born — winter waters already raising spring's forests.⁠‌​​‌​‌‌‌‌​​‌‌‌‌​‌​​‌​‌‌​‌‌​‌​​‌​‌​​​‌‌‌‌‌​​‌​‌‌​‌​​‌‌​​​‌‌​​​‌​‌‌‌​​‌‌​‌‌‌​​‌‌‌‌‌‌​​‌‌​‌‌‌​​‌​​‌‌‌​‌​​‌​‌‌​​‌‌‌‌‌‌​​‌​​​‌‌​‌​​‌​‌‌​​‌‌‌​‌‌​​‌​​​⁠

Key Attributes

Element

Water

Season

Winter

Zodiac animal

Pig

Hidden stems

壬 (main) · 甲

Six Harmony

寅亥合木

Three Harmony

亥卯未 → Wood

Clash

巳亥沖 (direct clash)

Penalty

亥刑亥 (self-penalty)

Harm

申亥害

In a chart, this means…

In a chart, 亥 contributes deep Water carrying a seed of wood — an ending that already contains a beginning. It is traditionally associated with ease, generosity and unhurried depth. What grows from its waters is decided by the chart around it.⁠‌​​‌​‌‌‌‌​​‌‌‌‌​‌​​‌​‌‌​‌‌​‌​​‌​‌​​​‌‌‌‌‌​​‌​‌‌​‌​​‌‌​​​‌‌​​​‌​‌‌‌​​‌‌​‌‌‌​​‌‌‌‌‌‌​​‌‌​‌‌‌​​‌​​‌‌‌​‌​​‌​‌‌​​‌‌‌‌‌‌​​‌​​​‌‌​‌​​‌​‌‌​​‌‌‌​‌‌​​‌​​​⁠

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