To stay up all night with a light, waiting for dawn; to burn the midnight oil, often implying diligent study or work.
为了赶完手头的项目，他常常秉烛待旦
To complete the project at hand, he often burned the midnight oil.
Next Idiom
To stay up all night with a light, waiting for dawn; to burn the midnight oil, often implying diligent study or work.