Guan Yu is a super general of Shu Han during the Three Kingdoms period! He is brave and good at fighting, loyal and upright, and is simply a legend! However, if Cao Cao gets the assistance of Guan Yu, although his strength will increase greatly, if he wants to unify the world, he has to consider many other factors!
First of all, the unification of the world does not just rely on fighting, but also has to consider political, economic, military and other aspects. Even if Guan Yu helps, Cao Cao still has to solve a bunch of problems, such as internal political stability, territorial governance, foreign relations, and a lot of troubles!
Secondly, the situation during the Three Kingdoms period was so complicated! All forces are fighting, and even if Cao Cao gets Guan Yu, he will have to face other powerful opponents, such as Liu Bei, Sun Quan, etc. If you want to unify the world, you have to defeat these opponents, and it is not an easy task.
Also, Guan Yu's character and loyalty are also a problem. He placed a high value on righteousness and loyalty, and if Cao Cao could not fully earn his trust and respect, Guan Yu might not serve him wholeheartedly.
Therefore, even if Cao Cao gets Guan Yu's assistance, there is no guarantee that he will be able to unify the world. In order to unify the world, it is necessary to consider various factors comprehensively, and it is necessary to face complex situations and powerful opponents. It's not an easy task!