誓言在终点前发酵
[shì yán zài zhōng diăn qián fā jiào]
'Oaths ferment before reaching the end.' Metaphorically speaking, it means that the vow made with passion grows more significant over time until its fulfillment at last. Often seen in the context of romance or any serious commitment, it suggests promises gain strength and maturity just before they're honored or reach the point when the outcome becomes known.