The artillery support wasn't meant to help the Advance Team strike at the Dongsheng army; rather, it served as a deterrent, using superior firepower to shatter the enemy's morale.
Because in ancient warfare, or rather, visual range warfare, morale is the most important trait to maintain combat effectiveness. An army without morale is no different than a lamb waiting for slaughter.
The continuous bombardment clearly disturbed the Dongsheng army; from the generals down to the soldiers, everyone was blinded by the explosions. Out of fear of the power of the blasts, they panicked, started to flee in all directions trying to avoid them, and completely forgot about pursuing the Advance Team.
Therefore, the members of the recovering Advance Team could finally breathe a sigh of relief—they all gathered together, waiting for the evacuation ships.
