Idiom describing the teacher correcting homework in the middle of the night

Idiom describing the teacher correcting homework in the middle of the night:

1, Sleepless Night [S249Xě ng Yè mè i]: Morning; Xing: get up; May: Sleep. Get up early and go to bed late. Describe diligence.

2. Day and night [yyǐ jì ri]: Night is connected with day. Describe stepping up work or study.

3, painstaking efforts [ǒu xěn lěXuè]: spit: spit; Li: Drop by drop. Metaphor is exhausted. It is often described as the hard work of career, work and literary creation.

4. Do your best [jūgūng jūn Cuū]: It means to be respectful and cautious and do your best.

5. Wholeheartedly [quán xρn quán y]: devote all your energy without reservation.