Understand Daeun (大運) - the 10-year luck cycles that shape major life periods in Saju analysis.
Daeun is a 10-year luck cycle. The Heavenly Stem governs the first 5 years, the Earthly Branch the next 5. Starting age varies by person.
Yang-Male / Yin-Female count days from birth to the next solar term; Yin-Male / Yang-Female count days back to the previous one. The day count divided by 3 gives the starting age. FateAIverse computes this automatically.
A cycle that strengthens the Yongshin / favorable element is favorable; one that strengthens the unfavorable element is adverse; otherwise neutral. Read as statistical flow, not deterministic fate.