杀鸡用牛刀

Traditional (Taiwan): 殺雞用牛刀

shājīyòngniúdāo ㄕㄚ ㄐㄧ ㄩㄥˋ ㄋㄧㄡˊ ㄉㄠ

    • to waste great talent on a small task
    • to use a sledgehammer to crack a nut

Character by character

Saying俗语俗語

Idiom惯用语 · In everyday use

Literally
use an ox-cleaver to kill a chicken
Meaning
Wasting great talent on a small task. Said with sympathy or as a mild joke about overqualification.

Sources