The history of the Three Kingdoms is a chaotic world in ancient Chinese history, and in the chaotic world, there will always be heroes Haojie who will stand up and do something vigorous and big. As a result, commanders such as Cao Cao, Liu Bei, and Sun Quan established their respective regimes with their own unremitting efforts. However, the three forces are fighting with each other, and the fight is inseparable, and no one will give in. It is reasonable to say that at this time, there was civil strife in the Central Plains, and the foreign tribes should take the opportunity to kill and harm one side, but why was there no foreign invasion at that time? Look at who is guarding the frontier and we will be clear.
Cao Cao's move
In order to dominate the world, the Three Kingdoms of Wei Shu and Wu fought for a long time, but unfortunately it was always difficult to distinguish between the high and the low, after all, no matter which side was full of talents, it should not be underestimated. When such a chaotic world occurs, it is usually possible for a foreigner to seize the opportunity to kill suddenly. However, such a situation has never happened, it is not that these foreigners do not want to, but they are really helpless. At that time, there was a foreign force called Wuhuan Guo, and they saw the good opportunity for the civil strife in the Central Plains and immediately decided to invade. However, at that time, they were broken by Gongsun Zhan.
However, they did not stop there, and later launched another invasion, at which time they encountered Cao Cao. Cao Cao had already unified the north, and his strength was quite strong, which even the States of Wei and Wu feared. In the face of such a strong enemy, where the Wuhuan Kingdom would be an opponent, it was quickly defeated. However, WuHuanguo's move also completely annoyed Cao Cao, so he ordered the army to directly attack the Huanglong Mansion and directly killed the supreme commander of wuhuanguo. After that, Cao Cao's actions also succeeded in killing a hundred people, and the other foreign forces naturally did not dare to rush into action.
A member of the Xiliang Ma family
In fact, the main reason why the foreign tribes did not dare to invade was that the border pass at that time was guarded by the Xiliang Ma family. As we all know, the Xiliang Ma family is strong in combat and invincible, and those foreign forces do not yet have the strength to confront them. And Ma Chao, one of the five tiger generals we are familiar with, is a member of the Xiliang Ma family, and his strength should not be underestimated.
I still remember that Cao Cao and his army were beaten by Ma Chao, not opponents. Because he was so powerful in the Central Plains, his reputation naturally spread to the ears of those foreigners very quickly. Since there are such characters who can fight, the foreign tribes must be afraid. And they wouldn't be stupid enough to invade, wouldn't that be self-inflicted? Therefore, even if the foreign tribes have the heart to invade, they do not have the courage to come and take the initiative to invade.
bibliography:
Romance of the Three Kingdoms