Blind evaluation: it is a system that organizes expert group evaluation, that is, anonymous submission, which means that the evaluation tutor does not know who the author of the paper is. If you send a dissertation without the author's name to an impossible expert, the score should be the most objective.

External audit: refers to sending papers to experts from other units for audit. Some schools are managed by the degree office in a unified way, while others are guided by tutors. 90% of the experts appointed by the tutor submit papers for review, and they can only pass because of the good relationship between the experts and the tutor.

The right of reply can only be obtained after passing the external examination. If you fail the defense, you can't graduate. Two experts who have passed the external audit have the right of reply, and the defense Committee does not include the external audit experts, and half of them can graduate.