出气包

Traditional (Taiwan): 出氣包

chūqìbāo ㄔㄨ ㄑㄧˋ ㄅㄠ

    • person who takes the blame and anger of others
    • punching bag

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
venting bag
Meaning
A person who gets the blame and anger of others, like a punching bag.

Sources