我错在是祸非福回眸一顾我错在满目凄楚笑而不哭
[wŏ cuò zài shì huò fēi fú huí móu yī gù wŏ cuò zài măn mù qī chŭ xiào ér bù kū]
'My mistake was in turning disaster to blessing; looking back, my sorrow was all in the corners of my eyes while smiling without crying.' This expresses regret and the complexity of emotional experiences that mix sadness, regret, and acceptance, all through a bittersweet smile.