After the exam of subject 4, the examiner asks you to sign your name on the stairs outside and take notes on the exam of subject 4. You have to go upstairs to class and take the oath. The time before and after class is about 30 minutes. After class, the examiner will continue to stamp and sign for you, and you need to sign and confirm when you leave the class gate, so the whole process will take about 40 minutes. Please take it as the answer!