前所未聞 qián suǒ wèi wén

DEFINITIONS

  1. unheard-of
  2. unprecedented

CHARACTERS

前 qián
HSK 1
in front, forward; preceding
所 suǒ
HSK 2
place, location; numerary adjunct
未 wèi
HSK 5
not yet; 8th terrestrial branch
聞 wén hear; smell; make known; news