In general, there is no limit to the number of times a paper can be repeated, and we can conduct multiple duplicate checking tests. As long as it can be checked before the final submission deadline, there will generally be no negative impact.

But from the school's point of view, some schools will provide 1-3 tests. If it is exceeded, the paper will be judged unqualified and may be postponed. It is best to check the duplicate according to the requirements of the school.