虽遗憾但懂得虽逝去亦幸福
[suī yí hàn dàn dŏng dé suī shì qù yì xìng fú]
'Even though there is regret, yet there is understanding, even after gone still remains happiness.' Conveys the belief that not everything needs to have a perfect ending. Happiness can also stem from the lessons learnt, memories cherished or peace found despite the past regret or loss.