朝乾夕惕

Explanation: Dry dry, that is, self-improvement; Ti cautious. Hard to describe carefully all day long, without any negligence slack. 　　Usage: Joint type; as predicate; that hard all day, not slack 　　Source: "Book dry" Dry all day, gentlemen, if Ti Xi Li, Without Harm. " 　　Examples: Although Take a shot, how can serve in case? However, ~, to the dedicated services. ★ Qing Cao Xueqin, "Dream of Red Mansions" Eighteenth back Thesaurus:  Once the candle to be, sit up and wait for daybreak, burn the midnight oil, through out the night