"Brother, in my current situation, I really can't come up with the money. To be honest, I'm calling today to ask if I could borrow some from you, just to get through this crisis. I really can't pay back that fifty million right now, but give me some time to get back on my feet, and I'll repay you. I have a batch of goods that will be shipped out soon, and the money will come in next week. I'll definitely pay you back then. Could you give me some time?"
"We've known each other for so many years, and I do trust you, so I'll wait for a week. However, even good brothers need to keep accounts clear. Let me be frank: if by this time next week I don't see my eighty million, the cooperation between our companies will have to end. Don't blame me for not warning you."
"I understand, I'll definitely pay you back by then."