[经] flow diagram of paper movement in an office operation
bàn gōng shì wén jiàn chuán dì liú chéng tú ㄅㄢˋ ㄍㄨㄥ ㄕˋ ㄨㄣˊ ㄐㄧㄢˋ ㄔㄨㄢˊ ㄉㄧˋ ㄌㄧㄡˊ ㄔㄥˊ ㄊㄨˊ