During the Three Kingdoms period, wars continued, and the three kingdoms of Wei, Shu, and Wu occupied one side to form a situation in which the Three Kingdoms were established. It is reasonable to say that at this time, the Central Plains region was very chaotic, the three kingdoms were all a pot of porridge, it should be a good time to invade, so why was there no foreign invasion at that time? Looking back at the history of our country, we can find that no matter what period, there is a widespread invasion of foreign enemies in our country, such as the "Wuhu Chaohua" incident, which is a very famous foreign invasion incident in China, and the scope of development of the Hu people has been expanding since then.
The "Wuhu Chaohua" occurred during the Western Jin Dynasty, which is closer to the Historical Line of the Three Kingdoms Period. In fact, even though the three kingdoms fought a pot of porridge, there was no invasion of foreign enemies at that time, because the troops of the three countries were relatively strong at that time, and the generals stationed on the frontier were very powerful, so they could not get any benefits on the battlefield at all, and it did not take long to give up and continue to attack the Central Plains. So, who were the people guarding the frontier at that time?
First, Cao Cao. Although the historical evaluation of Cao Cao is mixed, it is undeniable that Cao Cao was definitely an excellent military expert, and at that time, in addition to fighting the armies of Shu and Wu, Cao Cao also had to fight with foreign enemies such as southern Xiongnu, Wuhuan, and Xianbei, and repeatedly repelled these nomadic peoples on the battlefield.
Second, Liu Bei. Although Liu Bei repeatedly lost during the Three Kingdoms Scuffle, with the advice of military Zhuge Liang, Liu Bei established the Shu Han regime under his unremitting efforts. The overall strength of Liu Bei's army was not strong, but it was only compared with other armies, and it was still more dominant than these nomadic peoples.
Third, Ma Teng. Everyone may feel a little strange when they hear this name, but if ma Chao believes that everyone must be very familiar with it! And Ma Teng is Ma Chao's father, and the army he leads in defending the border can be said to be the army that contributes the most.
Since most of the nomadic people are mainly cavalry, while many Central Plains armies are mainly infantry, when the nomadic peoples launch wars, they often occupy a favorable position on the battlefield. However, the army led by Ma Teng was different, this army was famous for its cavalry, so when the nomads met the sophisticated Ma family army, it could be said that there was no benefit at all.
In fact, at that time, the border line of several thousand kilometers from the northwest to the northeast was guarded by the Ma family army. When the Qiang, Qiang and other ethnic groups came to attack, Ma Teng led the army to kill the other side without leaving a piece of armor, once or twice defeated these nomads still had luck, but after the number of defeats increased, they began to realize that they really could not defeat the Ma family army, and Ma Teng was also shocked by this.
After that, when they heard the name of Ma Jiajun, the nomads fled in all directions, and did not dare to send troops to attack. Therefore, although the Central Plains were fighting inextricably at that time, it was still very difficult for these Xiongnu, Hun, Qiang and other ethnic groups to invade the Central Plains, so everyone felt that there was no invasion by foreign enemies.
Although there was constant civil strife in the Central Plains at that time, these countries were still very clear in the face of great right and wrong, and there was no ambiguity in defending against foreign enemies. However, even though they resisted foreign invasion at that time, with the change of dynasties, the nomadic minorities still controlled the Central Plains and even established a unified dynasty.