開夜車

Simplified: 开夜车

kāiyèchē ㄎㄞ ㄧㄝˋ ㄔㄜ

    • to burn the midnight oil
    • to work late into the night

Character by character

Saying俗语俗語

Idiom惯用语 · In everyday use

Literally
drive the night train
Meaning
To study or work late into the night. Close to "burn the midnight oil".

Sources