Qi Men Dun Jia · Glossary
Three Yuan
The three five-day eras — Upper, Middle, and Lower (上元, 中元, 下元) — into which each solar term divides.
What this means
The era of the day, found from its stem-branch pair, combines with the solar term to select the chart's Ju. The same hour on different days can therefore cast different plates: the Yuan is the calendar's fine adjustment.
In practice
In K A X A N T A, three yuan is one of the concepts The Architect cross-references when synthesising your reading. The qi men dun jia engine surfaces it alongside seven other wisdom traditions so you can see how the same question reads through multiple lenses.
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