Gao Yang aimed at the location from which the enemy was firing, but he did not shoot, because the range was insufficient.
Gao Yang's maximum shooting range was one thousand three hundred mi, but the target was at a distance of one thousand five hundred mi—this distance was rather awkward.
The enemy's first round of fire did not hit, but the first round was intended to adjust their aim, firing a burst of bullets, then correcting their trajectory, so the next round, which was likely to come, might hit.
The enemy could fire over, but Gao Yang's side did not have weapons with sufficient range. If they continued to close the distance, Gao Yang would reach his maximum range, but before he could open fire, the enemy's hail of bullets would come sooner.