Kandahar Air Base was merely harassed, not surrounded, so as long as Kandahar Air Base did not fire, Gao Yuan and his team could enter smoothly.
The road by the entrance to the air base was full of potholes. When the car approached the entrance, it had to slow down considerably, slowly navigating around one bollard after another to enter the gates of the air base.
Gao Yuan and Xinghe, along with Li Yang and Song Qian, did not enter Kandahar Air Base with the vehicle, in case the base's guards suddenly opened fire, which would leave everyone in the vehicle with no escape.
It's wise not to harbor ill-intentions, but it's even wiser to always be cautious; although they had communicated for quite some time beforehand, there was no telling what might happen next.