Chinese

		calm; composed	self-possessed; composed; collected self-possessed; composed; collected; calm and at ease
simp. and trad. (泰然自若)		泰然	自若

Idiom

泰然自若

1. being calm and composed even under the most stubborn and difficult of situations

Synonyms

• 若無其事／若无其事 (ruòwúqíshì)