The reason for this is the following：

1. Signing: When the borrower signs a loan contract with the online lending platform, both parties reach a legal agreement, and the borrower is obliged to repay the loan at the agreed time and amount.

2. Legal protection: According to the laws of China, a loan contract is a legally binding legal document. The borrower will face legal responsibility and corresponding punishment if he fails to repay the loan within the time limit.

3. Personal credit damage: overdue payment will also lead to personal credit record damage, which will affect the borrower's future credit evaluation, credit card application, house purchase and other financial activities.

4. Extra expenses: overdue repayment usually leads to extra expenses such as late payment fees and penalty interest, which increases the total loan amount and the economic burden of the borrower.

Summary:

Although the interest on online loans is high, borrowers should repay on time and abide by the contract. Overdue will also lead to legal risks, personal credit losses and additional costs. It is suggested that before borrowing money, you should carefully consider your repayment ability and seek a loan channel with lower interest rate.