Changshou road 209 is standing behind Building 3. There is a wall between building 3 and a dormitory building. There is a small door. If the nearest door to Building 3 is the one we often drill, I wonder if you will come here for the exam. I estimate that the door will be closed during the exam. Then you'd better go in at the entrance of Huitong driving school, turn right directly and get out of Building 4. It seems that the door next to Huitong driving school has been opposite Building 3.

I hope I can help you.