Question

一清二楚[yī qīng èr chǔ]1.■be crystal clear; as clear as daylight [day]; as clear as noon; as dear as the sun at noon; as plain as the nose in your face; (as) clear [plain] as noonday; (as) clear as the sun at noonday; beyond the shadow of a doubt; clear as day; explicit; patently; perfectly clear