The Chinese City Lords were unable to retaliate at all. They were already weakened, and they did not have a numerical advantage. In terms of battle strength, they were far inferior to Great Qin and quickly fell.
Looking at the other City Lords being killed and how Great Qin had more or less taken over the defensive walls, the remainder of the City Lords could only choose to retreat. Their defeat was already inevitable.
With the City Lords retreating, the remaining soldiers on the defensive walls did not have any more strength to resist, and they too started running.
Everyone from the Chinese side started to retreat as quickly as they could; not a single person dared to remain. After hearing about this, the expressions of those still hurrying over immediately fell, and they started to run as well.
Great Qin had completely broken through the central area's defenses and started to enter the inner regions.