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.