鑿壁偷光

Simplified: 凿壁偷光

záobìtōuguāng ㄗㄠˊ ㄅㄧˋ ㄊㄡ ㄍㄨㄤ

    • lit. to pierce the wall to steal a light (idiom)
    • fig. to study diligently in the face of hardship

Character by character

Sources