ㄏㄨㄟㄈㄟㄧㄢㄇㄧㄝˋhuīfēi‑yānmiè

灰飞烟灭
  1. 比喻事物完全消失 談笑灰飛煙滅」、襲來繁華瞬間灰飛煙滅」。

lit. scattered ashes and dispersed smoke (idiom)​, fig. to be annihilated, to vanish in a puff of smoke