1. Preparation materials: The lender needs to prepare relevant evidence and documents to support its claim of suing the entrusted payer. This may include loan agreements, repayment records, letters and notices.

2. Bring a lawsuit: the lender may entrust a lawyer to represent him or go to the court in person to bring a lawsuit in accordance with relevant legal procedures. It is necessary to submit the complaint and relevant evidence materials to the court and pay the corresponding litigation fees.

3. Hearing: Once the court accepts the lender's claim, it will arrange a hearing. Both parties need to participate in the trial debate and cross-examine the facts and evidence of the case.

4. Mediation or trial: During the trial, the court may mediate and try to solve the dispute between the two parties. If the mediation fails, the court will try and make a judgment according to law.

5. Execution of judgment: If the lender wins the case and the entrusted payer fails to perform the judgment obligation, the lender may apply for execution. The court can take various measures to enforce the judgment, such as sealing up and seizing property.