臨危不亂 (lam4 ngai4 bat1 lyun6) — not to lose one's cool in the face of danger; un-perturbed in the face of danger in Cantonese
lamˎ₄臨ngaiˎ₄危batˉ¹不lyunˍ₆亂简 临危不乱
Mandarin Pinyin: lin1 wei1 [PRC] wei2[TW] bu2 luan4
Meaning of 臨危不亂
nounnot to lose one's cool in the face of danger; un-perturbed in the face of danger
nounUnruffled in the face of danger