xí fēi shèng shì
习:习惯于。错误成了习惯,反以为是对的
汉·扬雄《法言·学行》:“一卷之书,必立之师,习乎习,以习非之胜是,况习是之胜非乎?”
习非胜是作谓语、宾语;指不明是非。
accept what is wrong as right as one grows accustomed to it