以我浮生渡君一笑
[yĭ wŏ fú shēng dù jūn yī xiào]
'With my fleeting life, I strive for your smile'. Expressing a profound dedication to bringing joy to someone else, even if it means sacrificing a lot. This kind of sentiment is often used romantically, indicating willingness to devote a large part of oneself, perhaps a lifetime, for someone's happiness or pleasure.