Before you decide to take the exam, you must carefully consider why you take the exam and whether it has something to do with the industry you want to engage in in in the future.
If you can't find an ideal job for the time being after your master's degree, then taking the exam is not a clear choice.
In fact, after four years of Ph.D., your employment will be narrower, that is, mainly scientific research institutions, universities and government agencies.
Enterprises generally have less demand for highly educated talents such as in-service doctors, because most undergraduates and masters working in enterprises are enough.
Only those who really want to study and are interested in academic research are suitable to take the doctor's road.