一抹嫣红点缀了一世春秋
[yī mŏ yān hóng diăn zhuì le yī shì chūn qiū]
Translated as 'a touch of rouge decorates a lifetime of spring-autumn', this metaphor expresses the fleeting beauty, likely referencing the transient highlights (such as passionate moments) coloring an otherwise mundane life timeline or period.