Correct
一本正经
/ yī běn zhèngjīng /
Strokes
Definition
in deadly earnest/deadpan
Example
Definition
be stern and forbidding; be very/dead serious; in all seriousness; in dead earnest; prim and proper
1
Zhuāng
装
de
得
yīběnzhèngjīng
一本正经
de
的
yàngzi
样子
be sanctimonious; preserve one's mask of solemnity
2
Kàn
看
qǐlai
起来
yīběnzhèngjīng
一本正经
look as if butter wouldn't melt in one's mouth