落花有意随流水深海无情任心伤
[luò huā yŏu yì suí liú shuĭ shēn hăi wú qíng rèn xīn shāng]
Falling petals have intention following streams, whereas deep sea shows no mercy allowing one's heart to grieve: This is used to describe situations wherein even when people (or things) want desperately for their efforts to come true and succeed (just like how flowers want to continue living), they still cannot achieve these goals just as life continues on regardless of individual desire.