一本正经 (yī běn zhèng jīng) | Meaning: (idiom) in deadly earnest; deadpan | Chinese Idiom with Pinyin & Origin

sanctimonious · dignified道貌岸然dào mào àn rán

quiet and reserved · discreet (or serious) in speech and manner不苟言笑bù gǒu yán xiào

affected · artificial做作zuò zuo

conscientious · earnest · serious · to take seriously · to take to heart认真rèn zhēn

(of an atmosphere etc) solemn; grave; serious · (of a manner etc) earnest; severe; exacting · to strictly enforce严肃yán sù

to attend to everything personally事必躬亲shì bì gōng qīn

(idiom) in deadly earnest; deadpan