众所周知
zhòng​suǒ​zhōu​zhī HSK7

as everyone knows

  1. 众 眾 zhòng nounadjective
    crowd
    (bound form) a crowd; a multitude; the general public, as in 群众 qún​zhòng or 公众 gōng​zhòng
  2. 所 suǒ particle
    [relative]
    Used before a verb to form a noun-like phrase representing the object of the action, meaning "that which" or "what".
  3. 周知 zhōu​zhī adjectiveadverb
    well-known
    generally known; to be known to all; public knowledge