Then why don't you choose your own skin plastic surgery direction when you choose your major? You have obtained a doctorate in clinical medicine. In theory, there is no need to re-take the postgraduate entrance examination or take an exam. You just need to choose a good hospital to study skin plastic surgery, or it is more appropriate to study skin postdoctoral. You have already obtained a doctorate, and then you can only take a second doctorate at your own expense, which is unnecessary.