According to the introduction of daily duplicate checking network, both HowNet and VIP can check English, but few students will evaluate two different duplicate checking systems in a more professional way. Because it was developed by different companies, the matching algorithm of duplicate checking is different from the database, and the result is quite normal. The scientific approach is to know which system your school uses first, and then choose the same duplicate checking system to check, and the result will be the closest to your school.