When Gao Yang noticed a change in the slope of the underground car passage, out of caution, he had Li Jinfang stop the car. After confirming that the slope of the passage was indeed rising, indicating that they were not far from the exit, a problem presented itself to them.
Although they did not yet know how far away the exit was, they couldn't keep driving the car and brazenly rush out. If someone was guarding the exit, they would likely be shot into a sieve.
Not wanting to give the captured officer a chance to sound the alarm, Gao Yang observed for a while. Then, realizing that they did not know how far it was to the exit, Gao Yang thought for a moment and said, "Frey can drive this car. Let Frey follow slowly behind. The four of us will go ahead and scout. Let's first make sure the exit is safe."