一笔不苟

Explanation: Careful not carelessly. Not even a perfunctory. 　　Usage: Predicate; as predicate, adverbial; described as very serious 　　Source: The beginning of the Qing Shen, "notes West Qing Ji name track" after a careful, skill so Xun Technology also God. " 　　Examples: How serious I am creative attitude, I really ~. ★ Mao Dun, "No Title" Thesaurus:  Small lean, simplify sth. by cutting out the superfluous; simplify the complicated material; reduce to bare essentials, to grudge ink as if it were gold (said of one who would not write too readily) Antonym Group:  huddle, huddle, sloppiness to finish up a matter