huī​fēi​yān​miè

to vanish into thin air

灰飞烟灭 灰飛煙滅 huī​fēi​yān​miè
to vanish into thin air
literally scattered ashes and dispersed smoke; describes the complete disappearance of things or the death of people, like vanishing in a puff of smoke

Frequency

Movie subtitles
1.07 per million appears in 1% of films
Written text
1.16 per million

Sources