笼中鸟

Traditional (Taiwan): 籠中鳥

lóngzhōngniǎo ㄌㄨㄥˊ ㄓㄨㄥ ㄋㄧㄠˇ

    • someone controlled by others and without freedom
    • someone sheltered who can't face hardship

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
bird in a cage
Meaning
Someone controlled by others and without freedom, or someone sheltered in a narrow world who can't face hardship or see the wider world.

Sources