家喻户晓 (家喻戶曉) jiā yù hù xiǎo

jiā yù hù xiǎo set phrase every family and household knows; understood by everyone; well known
Domain: Idiom 成语
Notes: (CC-CEDICT '家喻戶曉'; CCI p. 34; Guoyu '家喻戶曉'; Mathews 1931 '家喻戶曉', p. 79)