Because it's not just the Tang Dynasty, everyone plays like this. At the same time, the leader of the ethnic minority did not necessarily care whether the blood of the Heavenly Son was on his pillow.
First, counterfeit princesses have existed since ancient times
The inventor of the matter of peace and affinity, the Han Empire, after Liu Bang was beaten, adopted a policy of peace and affinity.
During the era of Emperor Wen of Han, he was with the Xiongnu and kissed three times, and during the era of the Han Jing Emperor, he was with the Xiongnu and pro-Xiongnu once. During the reign of Emperor Wu of the Han Dynasty, he was also at peace with the countries of the Western Regions. After the Surrender of the Xiongnu, the Han Empire remained at peace with them.
So many and dear, did the emperors marry their own daughters?
No, a little more serious is the daughter of the clan, that is, the surname Liu, if not coincidentally, also take people to impersonate.
For example, Liu Xijun, who married Wusun, was the daughter of King Jiangdu, and Princess Jieyou was the daughter of King Chu, which was a good time.
Later, the Han Empire did not bird the Xiongnu at all, and casually found a court woman, crowned a princess, and married out. Even the emperor picked it first, which was not to pick the good-looking one to the Xiongnu Shan Yu, but to pick the beautiful self first, and the rest was sent to the Xiongnu. For example, the famous Wang Zhaojun went to hu Han's evil Shan Yu's side in this way.
The Tang Dynasty was actually quite good, and the Tang Dynasty was equally powerful against the surrounding minority regimes. However, Tang Suzong, Tang Dezong, etc., married out were the daughters of the real emperor, and the other princesses and princesses were also the daughters of the clan.
Second, what is harmony with the pro in the end?
Why does the Steppe Empire, whether strong or weak, always harass the Central Plains Empire?
When it is strong, it is still reasonable, because if you want to occupy more territory, what about when you are weak? Is it possible to hit the stone with a pebble?
No, because the products of the steppes are not enough to feed so many people, and in order to survive and live better, they must constantly loot materials from the Central Plains.
Therefore, the main reason for the nomadic regime and the Central Plains Empire to strive for peace and affinity when they were strong was to peacefully obtain materials from the dowry of the princess of Heqin, and the Central Plains would also give them a large amount of materials every time they made peace.
Therefore, it does not matter whether it is a princess or not, mainly the materials are in place.
Of course, there are other purposes for peace and affinity, such as when the Central Plains Empire is strong, and peace and affinity is to win the approval of the Central Plains Empire and thus lead other nomadic tribes.
If you dare to oppose me, I will unite with the Tang Dynasty to beat you down, and if you agree with my leadership, then the Central Plains materials brought by the Tang Dynasty princesses, I can share a little with you.
At this time, the Tang Dynasty was strong and the nomadic people were weak, even if it was not the emperor's daughter who married the past, the leader did not dare to say anything, and even took the initiative to help the Tang Dynasty cover up, after all, the identity of the princess determined the identity of his leadership.
If other tribes are let know that the princess is fake, the legitimacy of the regime's leadership will also be called into question.
To sum up, this matter has existed since ancient times, everyone did this, the Tang Dynasty was just a gourd painting scoop, the nomads are more concerned about the relatives than the princess herself; when powerful, even if it is not a princess, it does not dare to do anything. Therefore, there are very few cases in history of accidents because the princess is not the emperor's princess.