About this time, there was a plague developing in Cao Cao's forces which significantly weakened it. Source: Internet
After an initial skirmish, an attack beginning with a plan to set fire to Cao Cao's fleet was set in motion to lead to the decisive defeat of Cao Cao, forcing him to retreat in disarray back to the north. Source: Internet
Cao Cao's army was heavily outnumbered by Yuan Shao. Source: Internet
Liu Bei had become the head of the opposition to a surrender when Cao Cao's army marched southward to Jing. Source: Internet
Lü Bu's men deserted him, Yuan Shu's forces never arrived as reinforcements, and he was bound by his own subordinates Song Xian and Wei Xu and executed on Cao Cao's order. Source: Internet
Nevertheless, he would soon come under the threat of Cao Cao's larger armies. Source: Internet