坐以待旦 (zuò yǐ dài dàn) | Meaning: sit up and wait for daybreak | Chinese Idiom with Pinyin & Origin

night and day (idiom); continuous strenuous effort夜以继日yè yǐ jì rì

lit. to wait for dawn, one's head resting on a spear (idiom) · fig. fully prepared and biding one's time before the battle枕戈待旦zhěn gē dài dàn

cautious and diligent all day long (idiom)朝乾夕惕zhāo qián xī tì

sit up and wait for daybreak · sit and wait for the dawn · quietly wait for the day to dawn · remain awake till daybreak