The two of them didn't recklessly charge in, as there were three teams fighting inside. Everyone was hiding in the buildings, and you couldn't tell how many people were in each one. Rushing in would definitely attract the hatred and firepower of all three teams; you'd be riddled with bullets in no time, only a fool would do that.
Jiang Siming chose to cut the engine and maneuver around the giant rock peak on the right side of City A. After gliding the motorcycle to the base of the peak, he decisively abandoned it. The two of them proceeded on foot, moving to the back of the gas station at the entrance of City A.
This spot was often overlooked by others in City A. They climbed over the wall into the gas station and, after confirming no one was inside, turned their attention to the city. Unfortunately, the three teams in the city were all over by the ruins, and after waiting for a long time, they only encountered two stragglers.
With no other choice, they decided to take care of the two stragglers. As soon as they fired, the two teams by the ruins were even less likely to come over. But something is better than nothing, at least they got some results.