[经] beneficum division, benefit of division

chéng dān bù fèn dān bǎo zé rèn ㄔㄥˊ ㄉㄢ ㄅㄨˋ ㄈㄣˋ ㄉㄢ ㄅㄠˇ ㄗㄜˊ ㄖㄣˋ