Blind examination of doctoral thesis is very difficult, because the blind examination of doctoral thesis completely shields personal information such as tutors and students, that is, the teacher who completely evaluates this thesis simply doesn't know who the personal information such as tutors and students are.

Therefore, blind trial is relatively objective, but relatively difficult, and it will take a long time. And it will be harder to be excellent. Because the teacher who comes to evaluate this paper will not care where you are a student or who is the tutor of this paper, but will judge it entirely by whether the paper is well written or not.

I won't consider anything else, so it's still difficult to be excellent. If your hard power is not strong enough, you may not get excellent. Blind examination and passing the doctoral thesis are all problems, let alone an excellent doctoral thesis.

The difference between the second blind trial of doctoral thesis and the first blind trial;

The first trial is an internal audit, and the second trial is a certain percentage of spot checks. The second trial is stricter than the first trial. It is not easy to pass the second blind examination of doctoral thesis.

Your doctoral thesis failed in the first blind trial, which shows that there are major problems in your doctoral thesis. If there is such a problem, it is difficult to pass the second blind trial anyway. The difficulty of the second blind test is the same as that of the first blind test, and there is not much difference, but it is still impossible to pass without modification.