carry it off well
As if nothing had happened, the Chinese idiom, Pinyin is R ú w ú Q í sh ì, meaning as if nothing had happened, describes being calm or not taking things seriously. It's from officialdom.
The origin of Idioms
Chapter 18 of Li Baojia's Officialdom appearance in Qing Dynasty: "if the commander can't hear him, and Master Zhuang can't hear him, he will not mention him as if nothing had happened."
Idiom usage
As a predicate, attribute, adverbial; refers to people's attitude.
carry it off well