I am a first-year Ph.D. student in an engineering field in my home country, and my Ph.D. supervisor is my master's supervisor.
The central problem is that he is very busy with administrative work, thus he has no time to guide his students. I must emphasize that this is very common, at least in my school (though I don't consider this to be right), so other students in the research group seem to accept the fact.
Also, there are other problems:
I don't like the environment. I used to be a master's student for the same supervisor, but I was basically guided by another supervisor in another institution since I was working on a cooperative project. Thus I was not familiar with the current research group when I applied for the Ph.D. candidate. The supervisor has more than 30 students with around 10 Ph.D. students, thus the resources are very limited, and everything can be competitive (this is quite common in my country). The master's students seem to be very antiforeign for some reason. Though I don't really have to be close to them, it kind of irritates me.
No money, the dormitory sucks, and the administrative department is not helpful.
Actually, I have reached out to the supervisor that I decided to quit after two months since I got in. But he persuaded me not to do that and promised me he would make some changes.
I have talked to one of the Ph.D. students in this group, and she also persuaded me not to do that because there are plenty of ways to get instructions. So anyway I decided to stay at that time.
But the central problem cannot be solved, and I have to be on my own to start my project with very limited help.
All I want is to get basic and systematic scientific training from a supervisor who is prominent in my field. The current situation is quite the opposite.
If I quit, I would apply for another Ph.D. project in another country (I am so sick of the environment in this field of this country). I want to know the situations in countries other than China: the majority of supervisors would give basic instructions or not, and how they treat students.
I'm almost 24 years old, and I think I can afford to quit and wait for another year. Anyway, there are plenty of struggles for me, as no one would support me to quit, and the language barrier (I have never been abroad), and whether I am qualified to get into a project.