I think the thesis can be divided into two categories: one is to do what you want and the boss still supports it; One is working on the boss's project (both willing and unwilling).

To be the boss's project, the boss will definitely help him. Of course, what he/she cares about is not the process, but the result and progress. So many times, I am still depressed, especially when the conditions are not enough and the boss has not been "upgraded" into a "cow". On the one hand, I hope students can do high-quality papers, on the other hand, the conditions can't keep up, so students can only stay idle. Very boring: (

Do what you want, if the laboratory conditions just permit, or the boss sends the students out, it is still quite good, and the students are highly motivated. If not, it would be even worse. The original ambition was exhausted under poor conditions and without guidance, and continued until the graduation of the third year of research. ...

Therefore, it is very important to be a graduate school owner. First, you must have money, second, you must have good personality, and third, you must have certain academic attainments (I hate academic corruption). ...

:-) Feel for yourself. ...