ㄌㄢˇlǎnㄆㄟˋpèiㄔㄥˊchéngㄑㄧㄥqīng

  1. 後漢書··黨錮·》:登車攬轡慨然澄清天下。」官職澄清天下宏願舊唐書·八九·》:攬轡澄清下車整肅不敢前後非一。」

to assume one's post with the aspiration of bringing about peace and order to the nation (idiom)​