Are the Cao Can Cup preliminaries and semi-finals the same manuscript?

Yes According to Cao Canbei's regulations in official website, contestants are required to submit a paper as their entries, which will be used in the preliminary, semi-finals and finals. Therefore, the papers for the preliminary, semi-final and final competitions should be the same manuscript. Cao Canbei is an academic science and technology competition, which includes three stages: preliminary, semi-final and final.