Lending money to a friend, but the friend engaged in illegal business. According to what you said, you lent money to your friend, and your friend used your money to do illegal things. If you know this

Lending money to a friend, but the friend engaged in illegal business. According to what you said, you lent money to your friend, and your friend used your money to do illegal things. If you know this in advance, not only will you not be able to get back the money you borrowed, but you will also be involved. If you have really been cheated, the most important thing now is to come up with evidence that can prove that you have been cheated, and the most powerful evidence is the IOU. Because according to regulations, in addition to the loan amount, interest, and repayment period, the IOU also needs to state the purpose of the loan. If the purpose of borrowing is for legitimate purposes such as business, then it doesn't matter. You said that the Public Security Bureau was looking for you, but it was actually looking for you to understand and verify the situation. You have to tell them the truth and show them the IOU so that you can protect yourself. If you don’t write an IOU, it will be more troublesome and you will need to find witnesses to prove it. In short, you must be clear about the purpose of lending money to others, otherwise you will get into trouble.