Talk to the driver. Go to Surveying and Mapping Road (formerly known as changshou road, later renamed Surveying and Mapping Road), next to Xuefu Road, in front of a building, at the big black door. Most drivers know that. There are two big black doors on the surveying and mapping road. On both sides of the surveying and mapping road. You are going to the big black gate on the surveying and mapping road on the other side of Xuefu Road. The tall building facing the gate is Huiwen Building.