不費吹灰之力

Simplified: 不费吹灰之力

bùfèichuīhuīzhīlì ㄅㄨˋ ㄈㄟˋ ㄔㄨㄟ ㄏㄨㄟ ㄓ ㄌㄧˋ

    • as easy as blowing off dust
    • effortless
    • with ease

Character by character

Saying俗语俗語

Idiom惯用语 · In everyday use

Literally
not using the strength to blow away dust
Meaning
Done with no effort at all; very easy. Like "without lifting a finger".

Sources