Miànduì wēixiǎn, tā zhèndìngzìruò, cóngróngyìngduì.
Facing danger, he remained calm and composed, handling everything with ease.
Tips
usage
镇定自若 emphasizes outward composure despite inner pressure or external threat. It implies not just calmness but a natural, almost effortless poise (自若 = 'as if natural to oneself').
