It's true. Blind evaluation means not signing your own name and the name of your tutor on the paper, and then sending it to other teachers for review to see if your paper is qualified or not. There are two kinds of blind evaluation: on-campus blind evaluation and off-campus blind evaluation. In-school blind evaluation refers to sending your paper to teachers in other colleges for review, while out-of-school blind evaluation refers to sending your paper to teachers in other schools for review. Blind exams outside the school, how many papers will your school give to other schools, and how many will other schools give to your school. So it is true that the blind commentary of Northwestern Polytechnical University was sent to other provinces.