一 手 交 錢 一 手 交 貨

一手交錢，一手交貨

一手交钱，一手交货

yi1 shou3 jiao1 qian2 , yi1 shou3 jiao1 huo4

lit. one hand exchanges the cash, the other the goods (common saying); to pay for what you want in cash fig. simple and direct transaction