In ancient times, because of the traffic jam, people in the Central Plains only knew that there was China in the world, but they didn't know that there were other nationalities and countries. In the pre-Qin period, I only knew that there was a "Northern Emperor". The Han dynasty began to communicate with the western regions, only to find that many people are different from the Han nationality and do not belong to the court management. At that time, there was a "Xiongnu" who called himself "Hu", which means favored by heaven.
Huns also found people different from them in the south, calling themselves "big men". So they are called "conference semifinals", and they call Han people "Han people". That's what Han people call it. Older people are called "old people" and young people are called "men". Later, the Han people found many people who were not Han people, so they were all called "conference semifinals". After the introduction of the western regions, many foreign things were introduced, and the word "Hu" was added, such as:, pepper, carrot, and so on.
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The conference semifinals were formed during the Sixteen Kingdoms period. At that time, Xiongnu, Xianbei, Jie, Di and Qiang invaded the Central Plains and established political power. Therefore, this period is customarily called "Five Colors and Sixteen Countries". Among them, Xiongnu, Xianbei and Anta are nomadic peoples, while Di and Qiang are not nomadic peoples.
This period is also the most intense and acute contradiction between Hu and Han. The so-called "evil and righteousness do not coexist, such as Hu and Qin" (Book of Jin) compares the relationship between Han and Hu to both good and evil. Objectively speaking, this idea has always been the dominant idea in this period, whether we accept it emotionally or not. After all, it is a very difficult and long process from exclusion to integration between ethnic groups.
When it comes to Hu people, many people will think that this is a derogatory term for ethnic minorities. Compared with the Han people, the Hu people are not as advanced as the Han people and have different customs. They always harass the border by force. Naturally, I don't like these people, whether they are the Han regime or the people, so I can't say anything nice.
Jiang Tong said in "On Relocation" that "if you are not from my family, your heart will be different, you will be brave and resolute, and you will not be the same as China" (The Book of Jin), which has regarded them as contradictions between ourselves and the enemy. Therefore, when the conference semifinals are mentioned in later generations, no matter the tone or emotion, there is always a little contempt and contempt.
In fact, Hu is not a derogatory term for nomadic people. It's just a name for nomadic people. Later, it became a general term for foreigners or foreigners living in northern and western China. "Spring and Autumn Annals" means that all summers are spent in the mainland, and the land is abandoned in other places "(Jiang Tong Migration Rong Lun).
Summer is the central plains, and the concept of conference semifinals is also put forward from the perspective of the central plains, without emotion. During the Western Han Dynasty, Huns Khan Fox and Lu Gu once wrote a letter to Emperor Wu of the Han Dynasty, which said, "There are big men in the south and strong men in the north. Hu, favored by heaven (Hanshu). In other words, "Hu" is the favored son of heaven in the eyes of Huns, which is similar to the meaning of the son of heaven of Han people.
Reference: Ren Hu (the name of foreigners in ancient China Han people) _ Baidu Encyclopedia