Wusun is the ancestor of Kazakhs. That's the 1 power of the western regions. When Liang Wudi asked Zhang Qian to hollow out the Western Regions, it was to unite Yueshi and Wusunguo to attack Xiongnu. Later, Yue's family went back on their word and didn't want to be enemies with Xiongnu, so the Han Dynasty had to negotiate with Wusunguo. At that time, Wusun sent an envoy to Chang 'an, saying that he would cancel the king's name and surrender to the Han Dynasty, and also sent a precious Wusheng BMW to visit relatives and friends.
Liu was very loved there, so the relationship between Han Dynasty and Wusun became better and better. Xiongnu began to eat the Western Regions, because Wusun was a 1 force in the Western Regions. Although the Huns invaded, they failed. Later, the Huns came with the strength of the whole country. Wusun was not afraid of their desperate resistance, and at the same time asked the Han Dynasty for help. Because the new emperor had just ascended the throne, Wu Sun did not send troops to help him at first. He persisted for two years and sent a letter of help to the Han dynasty, hoping that the emperor of the Han dynasty could send troops to save the princess and Wu Sun as soon as possible.
Later, a Five-Route Army in the Han Dynasty trounced the Huns and showed the great man's national strength and military power in front of the Western Regions. However, although the combat power is very strong, the record is average. Because the Huns escaped, a war of annihilation turned into a race, but in the end it also won an unprecedented victory.