【不苟言笑】〖bù gu yán xiào〗[serious in speech and manner; keep one's gravity; not frivolous in talking and joking; reserved]

不敢后人灵感找，

苟安因循诗推敲。

言芳行洁鸾凤侣，

笑傲风月陶情操。

不随便说笑。形容态度庄重严肃。Not casual chatting and laughing. Describe solemn and serious attitude.同：正襟危坐、老成持重。反：油腔滑调、谈笑风生。