流年染指了悲伤眼泪微笑了过往
[liú nián răn zhĭ le bēi shāng yăn lèi wēi xiào le guò wăng]
A poetic way to express that as years have gone by ('流年'), sad experiences (reflected in tears) have become commonplace but also learning to smile and remember the past, reflecting on both melancholy and growth.