The purpose of losing weight is to check the duplicate of school papers. If the repetition rate of students' papers exceeds the standard range of the school, then students need to revise their papers according to the information in the duplicate check report. Students can choose the appropriate duplicate checking system, upload the test paper to the duplicate checking system on the duplicate checking details page, click the download test report button on the duplicate checking page after the duplicate checking is completed, and enter the duplicate checking order number to download the duplicate checking report to the computer.