📖 Meaning
This idiom means to work or stay awake continuously through the night and into the day, essentially all day and all night without rest. It describes an unbroken span of activity spanning the full cycle of day and night.
📜 Origin Story
The idiom is composed of 通宵 (all night) and 彻昼 (through the daytime), combining to convey an uninterrupted period covering both night and day. It does not trace to a single classical source or literary anecdote. The phrase draws on traditional Chinese timekeeping expressions, pairing the concepts of night and day to emphasize totality and continuity of effort or activity.
💡 Example Usage
项目临近截止，团队通宵彻昼地赶工，终于在最后期限前完成了任务。
With the project deadline approaching, the team worked through the night and day, finally completing the task just before the deadline.
🏷️ Category
➕ Similar Idioms
➖ Opposite Idioms
🔤 Quick Facts
- Chinese: 通宵彻昼
- Pinyin: tōng xiāo chè zhòu
- Literal Translation: through, night, through, day
- Category: Perseverance
- Characters: 4