Nanjing University of Information Science & Technology Nanjing Tech University has that kind of 3+ 1 class for going abroad, and my score is definitely enough. Please ask an experienced senior or someone you have known before. The international class you took, such as Mechanical Engineering of South University of Technology, belongs to the Institute of International Education, not the Institute of Mechanical Dynamics, so the diploma you got belongs to the Institute of International Education, not the Institute of Mechanical Engineering. In addition, which university diploma in Ireland will you get? The real diploma is very useful, but the gold content needs to be tested, because there are not many graduates now.

If you don't want to go abroad, you might as well not study. The purpose of international classes is to get diplomas from foreign universities.