remove the stains and cleanse the filth—do away with evil ways; eradicate bad habits and customs
❍ 政府号召人民～，移风易俗。The government called on the people to do away with their bad habits and transform social traditions.
涤瑕荡秽秽（垢）dí xiá dànɡ huì
涤、荡：洗荡，引申为清除；瑕：指缺点和过失；秽：污浊。比喻清除旧的恶习。get rid of a bad practice, eradicate bad habits and customs, reform one’s bad habits