不苟言笑

Explanation: Gou: struggling, whatever. Not to make a joke. Describe the attitude of grave seriousness. 　　Usage: Partial official; as the predicate attribute; describe the expression of solemn, serious 　　Source: Han Dai Holy "Book of Rites ceremony song": "Do not climb, not a deep, careful Zi, careful smile." 　　Examples: Bor Bennet was king, one name of a male character, but Hunan Xiangtan County, has always been a talk about the Song School, square collar step moments, ~. (Qing Liang "Future of New China") Thesaurus:  ice, for what they are, one's true character as the real face of Lushan Mountain, push oneself too busy or concentrated as to forget mealtime, openminded, Enough to fulfill on the spot, Lushan Mountain truncation, Lushan Mountain appearance, serious face and words, Cutting the wall to steal light, Measle Yingxue, Cited light through the partition, Zheng-Yan Li Yan Antonym Group:  Zuozhangzuoshi, Zuozhangzuozhi, Zuozhangzuozhi, crave for greatness and success, bashful, camp, alert assumption, mincing, strive for social recognition; fish for fame and compliments, Gouzhi guiltless, behave like thieves and prostitutes; the male are robbers and the female harlots, Daoshiqiming, Daomingqieyu, Line with Gouzhi, Fishing name deceive