[经] business from principal to principal

zhǔ tǐ duì zhǔ tǐ jiāo yì ㄓㄨˇ ㄊㄧˇ ㄉㄨㄟˋ ㄓㄨˇ ㄊㄧˇ ㄐㄧㄠ ㄧˋ