What kind of graduate student are you? Students admitted by unified recruitment do not need to pay fees. As long as you settle the expenses (tuition, transfer fees, etc.). ) With the school, you can take part in the defense. When handling defense procedures or other materials, you should ask your tutor for reimbursement, because every graduate student has a training fee.
If you are a master of engineering, a university teacher, etc. The cost may be related to each school. You can consult your school specifically, but as far as I know, there are almost no fees, including defense fees, which should be solved by your own tutor.