C154 Siege of Yanzhou

Although Cao Cao was an elite soldier, he still lacked Chen Yu's elite soldiers. Moreover, Cao Cao's territory was surrounded by his own territory on the north and west sides, which gave him a strategic advantage, so as long as he could send out an army and use the pressure of the mountains to attack Cao Cao, Cao Cao would not be difficult to defeat. As long as he could defeat Cao Cao