目不识丁

lit. the eye cannot recognize the letter T (idiom); totally illiterate

no; not so / (bound form) not; un-

male adult / the 4th of the 10 Heavenly Stems 天干[tian1 gan1] / fourth (used like "4" or "D") / small cube of meat or vegetable / (literary) to encounter / (archaic) ancient Chinese compass point: 195° / (chemistry) butyl

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

to know / knowledge / Taiwan pr. [shi4]

to record / to write a footnote