操劳 (cāo láo): Work hard (Verb) — Meaning & Stroke Order

He worked tirelessly day and night for this project and finally achieved a breakthrough.

You don't need to work yourself too hard over these trivial matters; just leave them to the team.

Why do you always work so hard for other people's affairs but neglect yourself?

Seeing my parents work hard for my studies, I resolved to strive even harder.