一叶障目

lit. eyes obscured by a single leaf (idiom) / fig. not seeing the wider picture / can't see the wood for the trees

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

to be in harmony

leaf / page / lobe / (historical) period / classifier for small boats / a surname

to block / to hinder / to obstruct

eye / (literary) to look; to regard / eye (of a net); mesh / mesh size; grit size (abbr. for 目數|目数[mu4 shu4]) / item; section / list; catalogue / (taxonomy) order / name; title