Of course, there are not only two major problems, but also some engineering majors. Some tutors also require doctoral students to complete laboratories and some scientific research projects before they are allowed to graduate. Because many doctoral supervisors need doctoral students to work for some scientific research projects. Doctoral thesis is difficult to do for many reasons.
As we all know, China is also a big country that trains doctoral students, and the number of doctoral students is quite large. There is basically nothing particularly good to do in a certain major or discipline, and the "predecessors" have finished all kinds of topics. Choosing a topic is a big problem, not to mention successfully opening a topic and completing a graduation thesis.
Speaking of publishing two or more academic papers before graduation, this is even more difficult. Laymen may not know that the so-called C journal (core journal) is an ordinary academic journal. The average doctoral student publishes a paper in one or two years, which is quite good. It is almost impossible for an ordinary doctoral student to publish a paper in C magazine.
Therefore, it is not difficult for doctoral students to graduate, but an inevitable trend.
Doctoral graduation requires certain assessment criteria, and each school is different, but it is not easy to have the same characteristics, so it is necessary to send some scientific research papers. Generally speaking, it is relatively easy to operate more engineering courses, and at most it is diligent. How can anything be produced by soaking in the laboratory all day?
But liberal arts and science can be regarded as a kiss. Therefore, depression is very common during doctoral studies, so common that almost everyone has depression.