Legal analysis: private lending earns 3 points of interest, which translates into an annual interest rate of 36%. Interest not exceeding 24% of the annual interest rate is protected by law and must be paid. Interest exceeding the annual interest rate of 24% is a natural debt, which can be repaid or not; But what has already been paid shall not be required to be returned.

Legal basis: Article 26 of the Judicial Interpretation of the Supreme Court on Private Lending Cases. If the interest rate agreed by the borrower and the lender does not exceed the annual interest rate of 24%, the people's court shall support it. The interest rate agreed between the borrower and the borrower exceeds the annual interest rate of 36%, and the interest agreement in excess is invalid. The people's court shall support the borrower's request to the lender to return the part of the interest paid that exceeds 36% per annum.