One is that although there are places for tutors, the project funds are limited, or the tutors are old and have other things to do. It is often suggested that students go to other familiar units for joint training, sometimes Chinese Academy of Sciences, sometimes other research institutes, and even drug control institutes, quality inspection institutes and enterprises.
In this case, if you stay in our school, there is basically no way out, but you don't have to swallow everything the tutor says. Tutors usually have more than one alternative unit. You should carefully consider your future development direction, whether you want to work directly or study for a doctorate after graduation. If you want to study for a Ph.D., go to the Academy of Sciences or research institutes, and if you want to find a job, go to an applied research institute or enterprise.
There is also a kind of mentor who does have practical cooperation projects with each other. Most of them went to enterprises. To put it bluntly, many of them go to work in enterprises, and their scientific research is not in-depth. The thesis must be completed under the guidance of the tutor. A friend I used to know was sent by a teacher to work in an enterprise for two years. As a result, when he graduated, he had nothing and finally dropped out.
In most cases, joint training is good, because most of the units they go to have better scientific research conditions and more sufficient project funds than the original units. Although some people may feel that they have no sense of belonging, or that joint training is very tiring, it is equivalent to getting a better platform with a lower grade.
When I graduated, I found that this experience could be written into my resume, and it was a good experience. Why not? So you can go to most joint training. But please keep in mind your graduation requirements, always pay attention, and don't work with your head covered.
The joint training of graduate students was originally a good way to train students. However, the predecessors who put forward this training method should ignore a logic: once the joint training mechanism is put into operation, the teachers in this university will think that another teacher is giving careful guidance, so out of trust, I believe that the teachers in the training base will give good guidance.
The teachers in the training base will think that this is not their own student anyway, and it is good to be able to cope with the past. Although it will cost a little more to bring an extra student, the money is nothing to teachers engaged in scientific research. What I am more afraid of is trouble. Don't think this probability is very low. If calculated by probability, every student under this mechanism has a 45% chance of encountering this situation.