[经] concurrence between delivery and payment

jiāo huò yǔ fù kuǎn de tóng shí lǚ xíng ㄐㄧㄠ ㄏㄨㄛˋ ㄩˇ ㄈㄨˋ ㄎㄨㄢˇ ㄉㄜ˙ ㄊㄨㄥˊ ㄕˊ lv3 ㄒㄧㄥˊ