一清二白

perfectly clean / blameless / unimpeachable (idiom)

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

Qing (Wade-Giles: Ch'ing) dynasty of imperial China (1644-1911) / surname Qing

clear / distinct / quiet / just and honest / pure / to settle or clear up / to clean up or purge

(of water etc) clear; clean / quiet; still / pure; uncorrupted / clear; distinct / to clear; to settle (accounts)

two / 2 / (Beijing dialect) stupid

white / snowy / pure / bright / empty / blank / plain / clear / to make clear / in vain / gratuitous / free of charge / reactionary / anti-communist / funeral / to stare coldly / to write wrong character / to state / to explain / vernacular / spoken lines in opera