鱼那么爱水水却煮了鱼
[yú nèi me ài shuĭ shuĭ què zhŭ le yú]
It illustrates a contradictory and bitter scenario: just as a fish adores water and can live because of it while paradoxically ends up being cooked (die) by that same element eventually, indicating deep disappointment due to hurt caused by what is loved most.