家传户晓

家傳戶曉
jiāchuánhùxiǎo

known to every household; ubiquitously known; widespread; extremely well-known

Wiktionary

Entry Composition

=1 家传 jiāchuán
  1. handed down in a family
  2. family traditions
=1 家传 jiāzhuàn family history (as a literary genre)
2 户 hù
  1. a household
  2. door
  3. family
3 晓 xiǎo
  1. dawn
  2. daybreak
  3. to know
  4. to let sb know
  5. to make explicit