The man stuffed Baili Shangxie and Helian Qingchen into the van as he spoke, before going in after them. After winding up the windows and locking the car doors, they started driving toward the train station.
The path they used was a normal surveillance route, which would allow them to avoid any suspicion. There were millions of cars passing through Beijing every day, so unless there were special circumstances, officials would hardly demand a search of the cars.
Not to mention, the outside of the van was completely normal. It looked just like a car from another province that entered the capital.
There was an advantage to this kind of van. Its interior was unable to be seen from the outside, whereas from the inside, anything occurring outside was as clear as day.