Layer 1 · month onto year Each flow-month pillar folds onto the year of the same pillar — e.g. Bing-Shen month = 2016 Bing-Shen. Not one past year for the whole calendar year.

Layer 2 · whole year onto whole year Same-stem years share the whole 12-month sequence (stems repeat every 10 years). Bingwu = Bingshen (2016); Dingwei = Dingyou (2017).

Fold years are memory coordinates. Preview ≠ prediction. The engine does not invent your story. Tap a card to write that month.