to begin work at sunrise and retire at sunset; to work from dawn till dusk
Examples
堯時,五十之民擊壤於塗。觀者曰:“大哉,堯之德也!”擊壤者曰:“吾日出而作,日入而息,鑿井而飲,耕田而食。堯何等力?”
During the reign of Yao, a fifty-year-old man was tilling the soil by the roadside. "How great is the virtue of Yao!" A passer-by ejaculated. The farmer replied, "When the sun’s up I work, and when it’s down I rest. I dig wells and there’s drink, plow fields and there’s food. Emperor Yao? What’s his awesome power to me?!"