Undergraduate graduation thesis generally adopts HowNet pmlc, and graduate graduation thesis generally adopts HowNet VIP. Small papers published in journals need to be copied. Accreditation agencies generally use CNKI periodical detection system amlc or smlc. Generally, within 30 days of general journals, it is best to use HowNet VIP to test core journals, and the test result is preferably 0. You can go to magazines or libraries to check the duplication of papers on HowNet, or you can go to some self-service websites of HowNet: PaperEasy, academic misconduct, ant duplicate checking, etc. Self-service detection throughout the process! As for other duplicate checking systems, you can refer to the first draft!