The database of the paper detection system of "Introduction to Learning" is mostly books, but rarely academic papers, journal papers and other documents, so the detection results will be different from HowNet. It is suggested that you use a third-party paper detection system that is authorized only by www and open to individuals when finalizing your paper.

As a duplicate checking system under Superstar, Xue Tong develops its business with books as its core. Therefore, Xue Tong's Daya duplicate checking database and its comparison database are based on books. If you want to check whether there is duplication between a paper and a published book, you can use the Daya duplicate checking system.