If you look at the ancient history of China, you will find that the wars between the Central Plains and foreign ethnic groups in various places have been running throughout. Although the Huaxia people won an overwhelming victory in the war against the alien races north of the desert and consolidated the existing territory, they did not take advantage of the war with the northern nomads at all.

In the war between the Central Plains and the northern peoples, the war of Emperor Wu of the Han Dynasty against the Xiongnu is a typical example that has to be mentioned, Emperor Wu of the Han Dynasty is determined to completely eliminate the Xiongnu, for this reason, under his command, Wei Qing, Huo Quai, Li Guangzhi and other generals commanded the army many times to take the initiative to attack the Xiongnu, from a tactical point of view, the cavalry of the Han Dynasty once drove the Xiongnu to the north of the desert, captured a large number of people and animals, but the strategic significance of the war was never reached, that is, the complete destruction of the Xiongnu. Once the Huns recuperate and recover, they will inevitably make a comeback. The Han Dynasty, on the other hand, greatly depleted its national strength in successive years of foreign wars. The huge wealth accumulated by the state during the reign of Wenjing was exhausted in the war, and the manpower and material resources were also greatly strained. According to Sima Qian's records in the "Historical Records", during the war, the rear sent 64 loads of grain to the front, and only 1 load of grain could reach the front soldiers. In almost every war, more than 100,000 cavalry, hundreds of thousands of infantry and a considerable number of laborers had to be dispatched, so one can imagine how much burden the people of the Central Plains had to bear in the supply of food alone. In order to support the war, Emperor Wu of the Han Dynasty set up a complicated tax project, desperately squeezed the wealth of the people, and finally ended up in a poor country and a weak people.

The war also greatly consumed the military strength of the Han Dynasty, in the distant barren land and the Xiongnu to fight to the death, once defeated, it means that there is no chance of survival, even if the victory, the price paid is also very great, according to records, a trip out of 140,000 horses to go out, and back to less than 30,000 horses, the loss of the Han army can be imagined.

The Han-Hungarian War laid the foreshadowing of the fall of the Han Dynasty, and the Xiongnu were still active on the stage of history, even when the Han Dynasty fell, the Xiongnu still lived in the northern grasslands, and even in the Western Jin Dynasty of Wuhu Chaohua, the Xiongnu was also one of the five Hu in the Central Plains.

After Emperor Wu of the Han Dynasty, the rulers of the Central Plains completely abandoned the method of solving the northern plague through material resources, and instead treated the problem with a defensive posture, but the result was that the nomads repeatedly invaded the south, and even the Mongols and Jurchens became the lords of the Central Plains for a time.

There are different opinions on this question as to why the Han nation has repeatedly failed in the confrontation with other nationalities, but there has never been an explanation that everyone can agree on.

In my "Imperial Concubine is Not Good", the setting Xianbei occupies the north of the Great Wall, the Qiang people occupy the Hexi Corridor, and the border troubles are also a problem that Dacheng must take seriously, in the future, with the development of the story framework, the contradictory relationship between the parties will also promote the further development of the story plot, as a witness, Feng Xiaoxiao will also be inextricably linked with it, what will her fate be, the answer will be given later, so stay tuned!