I agree with Mr.Quan Yagami in Viet Nam. Lord Cao Cao was being the greatest. Lord Meng De dared to fight with Lu Bu's force and Yuan Shao's force,which was the powerful force in that time. I wonder Where Liu Bei was??? He just a coward thouth having luck to got Lord Guan and Zhang Fei. In my opinion, the greatest man is Lord Cao Meng De.