1. First, register the HowNet account and log in. On the account management page of HowNet, click the duplicate checking service to enter the duplicate checking page.

2. Secondly, on the duplicate checking page, upload the papers that need to be duplicated. After uploading, you can preview and simply edit them. After editing, click OK to submit them for repeated inspection.

3. At last, the system will prompt whether to use the number of free duplicate checking, and the duplicate checking can be carried out after confirmation.