While some forces were daydreaming about getting Da Li to retreat, Di Xin's book repair also successfully reached the eastern border after going through some twists and turns.
Each province has a center of power.
The center of power in northern Xinjiang is Yanque Pass, and the center of power in the east is Jiande City.
Like Yanque Pass, Jiande City, as the center of power, is also the front line in the eastern region to resist barbarian invasion.
Although this arrangement is not so convenient for managing the entire territory, it can respond as quickly as possible when it is invaded by external forces.
War is a race against time. Sometimes if you respond a moment earlier, the final result will be completely different.
Unlike Northern Xinjiang, there are no generals in Jiande City now, and the highest general in charge of the military is still the commander-in-chief.
The capital commander of Jiande City was named Liu Jiande.
Liu Jiande's name is not a coincidence, his father was the previous commander of Jiande City.
The former commander of the capital who had resisted the barbarians in the east all his life, when he got a son in his old age, he took the word "Jiande" from Jiande City as his son's name.
Later, Liu Jiande also followed his father's last wish and successfully took over the position of commander of the capital, replacing his father and continuing to guard the eastern border of Dali.
Unlike Yanque Pass, it only needs to face the invasion of Turks.
In addition to Goguryeo, the barbarians outside Jiande City also included the Uighur tribe.
The Uighurs used to be a Turkic tribe on the grasslands outside the northern Xinjiang. Therefore, they were defeated by the Ashina tribe in the process of competing for the Great Khan. In anger, they broke away from the Turks and stood on their own.
After breaking away from the Turks, the Uighur people naturally could no longer stay on the grasslands to graze.
With Dali to the south and the sea to the north, the Uighurs could only migrate to the west or east, and in the end they chose to go east.
Goguryeo has numerous mountains and complex terrain, making it easy to defend but difficult to attack.
The Uighurs were also nomadic, relying mostly on cavalry and not good at attacking cities. In addition, Goguryeo's complex terrain was not suitable for grazing. So after reaching an agreement, they took advantage of the road and finally settled in the southern part of Goguryeo.
Although the grassland here is not as vast as the original grassland, it is more than enough to accommodate the death of the Uighur clan.
As for the herding people here, they were defeated by the Uighur people and incorporated into their own ethnic group.
This time, when King Yu's army was attacking Goguryeo, it was at the border of Chen Bing of the Huihe tribe that they formed a confrontation with the defenders of Jiande City to prevent Jiande City from sending reinforcements.
But what the Uighurs didn't know was that Liu Jiande, the commander of Jiande City, had no plans to send troops.
It is true that a member of the royal family appeared on the land of another country. Because he was the closest, Liu Jiande had the obligation to send troops to protect the safety of His Royal Highness King Yu.
But first of all, King Yu is traveling with a large army this time, and there is no danger for the time being; secondly, Goguryeo and other places have been regarded as future achievements by the eastern generals, and they are just waiting for the imperial court to issue an order to send troops to quell the war.
Yi, now he is being picked peaches by His Royal Highness King Yu from Northern Xinjiang. He is a little dissatisfied.
Since King Yu didn't take the initiative to ask for help, he simply pretended that he didn't know anything about the matter and lived his life behind closed doors.
In fact, even if King Yu took the initiative to ask for help, he had no intention of sending troops. Therefore, he was happy to see the outcome of the Uighur clan's invasion of the border.
Anyway, with King Yu's expeditionary force outside, the Uighurs did not dare to risk their rear being attacked by actually invading at this time.
After pretending to be ready for the confrontation, he started watching the show leisurely.
Yes, even though he pretended not to know anything, the battle took place in Goguryeo, not far from the eastern border. No matter what the reason was, it was impossible for Liu Jiande not to pay attention to this matter.
Although he was happy to see King Yu defeated, he did not want to implicate the people at the eastern border.
Therefore, when Emperor Xin attacked the border city of Goguryeo, his people were among the scouts from the surrounding forces, and there were also his people among the scouts who later participated in capturing the Goguryeo soldiers who broke out.
And when the Goguryeo soldiers revealed the information they knew, he was even more shocked.
The forces surrounding Dali had obtained some information about Northern Xinjiang through various means before. Although it was not very detailed, they were still somewhat prepared.
But Liu Jiande is different.
As a general of Dali, if he crosses the border to explore the intelligence of Northern Xinjiang, he will have violated a taboo. If he is discovered, he will be dismissed from his position at the least, and his family will be confiscated and his ancestors will be confiscated.
Others might take this risk, but Liu Jiande focused entirely on the eastern border. He only wanted to fulfill his father's wishes and pacify the surrounding barbarians during his lifetime. Other than that, he was not interested in anything outside.
He didn't even bother to understand the fight for the throne among the princes and princes in the capital.
Therefore, Liu Jiande's understanding of Northern Xinjiang only came from official news.
For example, when King Yu just arrived in northern Xinjiang, he foiled the Turks' two plans to invade the south, such as the popularization of coal stoves, and the destruction of the Turks, etc...
Among them, what he envied most was that His Royal Highness King Yu had the power to send troops. He could take the initiative to send troops to destroy the Turks at the right time and solve the serious troubles in northern Xinjiang.
At the same time, the only thing he knew from that battle was that the cavalry in Northern Xinjiang actually surpassed the Turks, who were famous for their cavalry.
Because the eastern border also faced nomadic peoples like the Uighurs, Liu Jiande had always wanted to know how King Yu trained the cavalry, but he had never been able to do so due to various reasons.
Later, there was the matter of His Royal Highness Prince Yu's personal expedition.
If the target was the former Turkic Liu Jiande, he would naturally not say anything, but who knew that His Highness King Yu's target this time was all the forces around Dali, and the first stop was Goguryeo, which was under his jurisdiction.
Liu Jiande had wanted to destroy Goguryeo for many years, but in his imagination, the matter should have been accomplished by sending troops from the eastern border and led by him personally, rather than by an army far away in northern Xinjiang.
He could reluctantly accept it if they sent troops together, but when Liu Jiande saw the opportunity coming, he once again submitted a letter to send troops, but what he received was another rejection from the court.
Seeing others eating the meat he ordered but not even being able to drink the soup, it's no wonder that Liu Jiande would feel resentful.
But what he didn't expect was that His Royal Highness Prince Yu's army would be so powerful in combat.
The immortal army!
With such an army, among other things, Liu Jiande, who knew Goguryeo thoroughly, knew that Goguryeo would definitely be unable to resist.
Seeing that his father's last wish was to be fulfilled by someone else, Liu Jiande got very drunk that night.
Right in front of my father's grave.
Although he had no idea what to do about it, and although he secretly cursed King Yu for returning in defeat, he also knew that after Goguryeo was destroyed, the people who benefited the most after Goguryeo was destroyed were indeed the people on the eastern border.