When the Boyi Cavalry began spurring their warhorses and advancing along the riverbank, it seemed the Nix Army only then discovered a gap in their defensive line and hurriedly dispatched their Spear Soldiers to try to fill the breach.
The Boyi Cavalry, of course, did not want the enemy to successfully form a dense spear wall, so their entire army pressed forward, speeding up their charge, attempting to break through the gap in one fell swoop.
However, the Boyi Cavalry, focused on the front, did not notice that Nix warships on the Delaware River beside them had formed into lines parallel to their charge route.
The sailors on board removed the burlap covering the bed crossbows in the center of the ship's hold, and with piercing whistles cutting through the air, crossbow arrows were fired sideways at the galloping Boyi Cavalry.