This is of course impossible. First of all, you should understand the nature of the National Defense University. The nature of the National Defense University is similar to that of the Central Party School, and it belongs to an on-the-job administrative organ (not an institution such as a university). National Defense University doesn't recruit students, even foreign students, because its students come here and are selected by various units (of course, the main training targets). Generally speaking, there are few officers below division level. In addition, graduation from national defense university does not mean that the rank has been upgraded, but it is just a means of focusing on training or on-the-job further study.