Plagiarism is a matter of revision and rewriting. Each school has different regulations on the repetition rate, which generally requires no more than 20%. After the students hand in their papers, the school will check them again. Once they find that they don't meet the requirements, they will return the test papers to the students and ask them to correct them before handing them in. After the students revise it, the school will check it again. If the paper fails again, the school will ask students to rewrite it. Most students who rewrite will postpone graduation and wait until the second year to participate in the defense, which will affect employment.
When a student is found to have plagiarized his thesis after graduation, the school may just revoke the degree certificate awarded to the student. Some students passed the thesis defense by luck and graduated smoothly. But later it may be found that the paper was plagiarized, so the consequences are quite serious. Zhai Tianlin, an actor, said that he didn't know HowNet when he was on the show, and was finally found plagiarized by netizens. Finally, he was revoked his doctorate by Beijing Film Academy. There are still many such things, and students should take warning and be honest in their papers.
In short, plagiarism is very serious, and colleges and universities have zero tolerance for plagiarism. Students have studied for several years, and writing papers is also a test of their ability. Don't resist writing a paper. Check the information by yourself and consult the thesis tutor. Most of them can write their own papers and successfully pass the thesis defense.