付东流

Traditional (Taiwan): 付東流

fùdōngliú ㄈㄨˋ ㄉㄨㄥ ㄌㄧㄡˊ

    • for effort to be wasted
    • to go down the drain

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
hand over to the eastward-flowing river
Meaning
For effort and hard work to be wasted and come to nothing. Said regretfully, as in 'all down the drain'.

Sources