I believe that friends who have read history know that in ancient times, due to the limited level of science and technology, production tools were also very backward, the lethality of various military tools was naturally not so strong, and most dynasties were still in the era of cold weapons. Coupled with various reasons such as geographical location and power struggle, the ancient emperors actually lacked effective control over the various regions within the territory, not to mention the rapid expansion of the territory.
In this case, the emperor's territory will have all kinds of fragmentation and defection, especially the ancient frontier nomads, who are fierce, because of their geographical location is not very good and the land is poor, they will often organize armies to plunder in the border areas and rob people and materials. This situation caused the emperor a headache, because the effective maintenance of the border required a large number of people and horses, and the economic cost was very high. So the ancient emperors took advantage of the nomadic envy of the royal life to introduce a policy of peace and pro-family.
Specifically, the princess was married to the frontier area to make peace with the nomads, and every year the imperial court allocated a part of the materials to appease them, in order to seek stability in the frontier and exchange peace at a smaller cost. The most famous case of Heqin is that Zhaojun is out of the jam.
And there is such a princess, her identity is actually a palace girl in the palace, the emperor because of the heartache of the royal family to go to the frontier of the harsh environment to live, heart unbearable, so he chose one of the palace women, tanuki cat for the prince, let her pretend to be a princess to go to the frontier to make peace with ethnic minorities.
However, on the way to the frontier, the entourage unexpectedly found that the princess was pregnant, which was a big scandal and would make both sides faceless. So they made a decision on the matter on the way, believing that going to the frontier and returning to the interior of the country were both dead, and that they would not be spared the fate of the foreign king, and it was better to choose a way out that could keep themselves alive. So they decided to make up their minds and live in Anza on the way, unfettered by both sides.
The place where they settled was called Shupantuo, in the territory of present-day Xinjiang. The child born to the palace maid became the first monarch of the country, and as it multiplied, the place gradually evolved into a small country. It was not discovered until the Tang Dynasty. It is now part of China. What a creation.