Some people face bad tutors, squeeze the labor force, grab jobs, countless horizontal topics, and various gifts, which are easy to call names and postpone graduation. Moreover, he has a wide network of contacts, and he is not afraid of your trouble, but he can always graduate in time. There is a kind of people who have entered some old and declining schools and are dissatisfied with their doctoral programs all the year round. I let you go because no one will quit now. Your mentor has a good core for most of his life. But times have changed, and now the requirements for doctoral graduation are high. They can't help you at all and can't give you anything. They just said they couldn't help you, no money, no project. Only the school money is there for you, as long as you leave your doctorate at school. This is the hardest thing to graduate.