First of all, different paper duplicate checking systems have different detection results due to different databases and algorithms, so if the detection results of the duplicate checking system we choose are not accurate enough, it will inevitably affect our subsequent paper revision. Only if the detection results of the duplicate checking system are accurate enough will it be beneficial to our later paper revision and weight reduction. This small series recommends Paperfree. After all, as long as we modify and lose weight according to the test report, we will generally only modify the marked repetitive parts in the report, and the unmarked non-repetitive parts do not need to be modified. Therefore, if the result of duplicate checking is inaccurate, it may lead us to repeatedly modify the content that should not be repeated, and the quality of the repeatedly modified content may be reduced.