About two months before the thesis defense, your tutor will arrange a pre-defense for you, and several teachers in the teaching and research section will surround you, listen to your thesis, ask you questions, and then decide whether you can continue to participate in the defense. Almost all of these can pass, but a few people will fail, so you should be prepared.
Each student can only get a degree certificate by a defense team composed of college teachers. Students who fail in defense can only get an associate degree certificate when they graduate. If the defense is successful within three years, the associate degree certificate will be exchanged for a degree certificate. Students who have failed in defense for more than three years will not be able to obtain a degree certificate.