Tuyuhun's gains and losses are of great significance to the game between the Tang Dynasty and Tubo, and it cannot be overstated no matter how you say it.

Even if the people of later generations did not have enough geographical knowledge and military thinking, as long as they could look at the map, they could feel the strategic deterrence that Tubo demonstrated after the annexation of Tuyuhun.

On the map, the territory of Tubo, which originated on the plateau, is like a boulder with a straight pestle between the arms and hearts of the Tang Dynasty after being connected with Tuyuhun. Although the Tang Dynasty expanded its territory in the Western Regions during the Tang Dynasty and competed with the Great Food for hegemony in Central Asia, no matter how powerful the outstretched fist was, Tubo was always in the weakest position of the Tang Dynasty!

Although Tibet has achieved unprecedented unification on the plateau due to various factors such as the favorable time, place and people, it is not enough to nourish a great empire that flourished for a time on the plateau.

As a transition zone between the plateau and the flatland, Tuyuhun means the future, hope, and endless possibilities for the emerging regime of Tibet!

Therefore, the first battle of Songtsen Gampo when he went down the plateau was to attack Tuyuhun. After the death of Songtsen Gampo, Lu Dongzan, who was in power, made the conquest of Tuyuhun his most important mission.

Facts have proved that this pair of monarchs and ministers went right, and after the annexation of Tuyuhun, Tubo has the foundation and qualifications to create a century-old hegemony. If there is no Tuyuhun as a supplement, even if Tubo walks down the plateau, it will inevitably run into walls everywhere.

Later generations talked about the strength of the Tang Dynasty, and there was no lack of excitement and excitement. However, nearly half of the series of military operations carried out by the Tang Dynasty in Longyou and the Western Regions were entangled with Tibet.

From Lingnan to western Sichuan, Longyou to the Western Regions, Tubo and the Tang Dynasty have been entangled for more than 200 years, and the reason why they are so resilient and more vicious than any enemy of the Tang Dynasty at the same time, the logical origin of everything lies in the gains and losses of Tuyuhun!

Even if at the height of the Tang Dynasty, the Tang Dynasty tried its best to expand and open up and defeat one opponent after another, but because it did not solve the elbow and armpit problem of Tubo, once the situation was turbulent, Tubo rushed out from Tugu Hun and cut off Longyou, all the achievements of the Tang Dynasty in the Western Regions became a cloud of smoke, and even Guanzhong, the core of the empire, became a place where Tubo thieves rode horses!

Hei Tooth Changzhi sighed several times, Li Tong listened to it in his ears, and his inner feelings were naturally quite complicated.

When the Tubo army fought hard and the whole country fought for the war, and surrendered Tuyuhun, the Tang army was still fighting with the three northeastern countries, and did not pay enough attention to the safety of Tuyuhun, an already dishonest vassal country.

In the process of conquering Tuyuhun, Lu Dongzan also tried his best to conspire, on the one hand, he invested at any cost on the frontal battlefield, and on the other hand, he infiltrated Tuyuhun and plotted against the Tuyuhun magnates.

There is also the constant weakness of the Tang Dynasty, so that the Tang Dynasty ignores its threat, and even puts his son into Chang'an in the process, that is, the most outstanding Qinling.

First as a grandson and then as a master, Lu Dongzan father and son fully implemented this idea with practical actions, once they subdued Tuyuhun, digested it for a few years, and accumulated strength, they went west based on Tuyuhun and won the four towns of Anxi in a war!

No matter what you say, Li Tong has to admit that his grandfather Li Zhi really raised tigers and connived at Tubo to merge Tuyuhun, burying a big trouble for Datang that has almost always been his confidant.

Although the main forces of the Tang Dynasty were attacking Goguryeo at that time, they were not without interference in Tuyuhun. Tubo, who didn't take Tuyuhun, is at best just a little milk dog that hasn't yet teethed.

Although Songtsen Gampo made a few cruel remarks in Songzhou during the Zhenguan period, if he dared to start a full-scale war with the Tang Dynasty, not to mention the question of whether he could do it or not, according to the plateau situation at that time, it may not be Tubo who achieved hegemony later, but Zhangxiong, who had not been destroyed at that time.

At that time, the Tang Dynasty was absolutely capable of interfering in the Tuyuhun war, and when Su Dingfang was engaged in the Western Turks, he could turn Tubo Gan on his back by the way. However, at that time, Gaozong Li Zhi did not pay enough attention to this, and only attacked Goguryeo with all his might, which gave Tubo a lot of strategic opportunities, and he attacked for more than three years, and took Tuyuhun by virtue of the power of Tuyuhun and Tubo.

The volume of Tuyuhun is not inferior to that of Tubo, and the potential is even surpassed, so Lu Dongzan and his son simply turned a large area of Tuyuhun's hometown into a fiefdom, which is also the foundation for the Gar family to become the first power in Tubo.

In the first battle of Dafeichuan, more than 400,000 troops were invested in Qinling, more than half of which were Tuyuhun people who were recruited on the spot in Tuyuhun. Whether before or since, although there is no shortage of powerful ministers and wealthy families in Tibet, there is no minister or family that can bypass Zampu to control so many people and resources!

In the long run, Gojong's strategic misconduct was indeed a serious legacy. The return of the defeat of Goguryeo was far from compensating for the losses caused by the connivance of the Tubo annexation of Tuyuhun.

In the war that has risen to the level of the two great powers, although the arrangement of troops on the battlefield, the tactical trade-offs, including the arming of soldiers, are very important, but the various games outside the battlefield are equally important, and even those are the real factors that determine success or failure.

It is advisable to look at the scenery and say something that is not imposing enough, even if Tubo is so fierce, you can't do it head-on, and the elder will kill you. Fight to the end, fight is the heritage. Of course, there is nothing to be proud of, but when you think about it, at least you have a bottom in your heart.

After observing the geography near the Baishuigou Pass, Li Tong ended today's trip and did not continue to inspect other places.

Li Tong still gained a lot from this on-site investigation. Although he did not witness the fight between the Tang army and Tubo, he was at least more deeply aware of the impact of the gains and losses of the Tuyuhun land on the war between the two countries, and at the same time had a certain understanding of the offensive and defensive situation of the two countries.

The story of the Gaozong period, think about it, you don't have to sigh deeply, people who have no interest will only complain that their ancestors are not angry, and since they have recognized their mistakes, they will actively correct them.

It's not all meaningless to deal with the Three Kingdoms of Northeast China, and you must know that the black tooth Changzhi he needs to rely on right now is still from Baekje. One generation solves the troubles of one generation, if the ancestors really do everything well, the children and grandchildren have nothing to do, and they can only be reduced to rice worms waiting to be slaughtered, just like the descendants of Guan Longxun in Li Tong's eyes.

At least at present, the situation between the two countries has not reached the worst level, and it is even better than the opening period.

Although there were victories and defeats in the struggle with Tibet during the opening of the Tang Dynasty, there were no defeats like Dafeichuan and Chengfengling.

At present, although Tubo actually occupied Tuyuhun, the Tang Dynasty did not recognize it, and the Haidong region on the east side of Qinghai Lake was still in the Tang army's sphere of influence.

In history, the Ruizong period first lost the land of the Yellow River Jiuqu, and even the control of Chiling was lost in the Kaiyuan period.

At that time, in order to concentrate on dealing with other border troubles, the Tang Dynasty had to meet with the two countries, agreed to take Chiling as the boundary, and recognized the hometown of Tuyuhun as owned by Tubo, which led to several subsequent attacks around Shibao City.

As for now, Lao Tzu admits your ancestors, just do it!

After returning to the Huangyuan camp, Li Tong and his group had a simple meal, and then left a few important generals to discuss the next series of military plans.

"At present, the two countries are surrounding Chiling, disturbing each other by games, and each other has its own winners and losers. However, if we want to raise heavy troops to approach Qinghai, the passage under our control still needs to be opened, otherwise the army will not be able to start the battle lightly. ”

The reason for what Hei Tooth Changzhi said is also the reason why Tubo has not made a big move into Kou Longyou over the years, because neither side can have absolute control over the Chiling line.

Therefore, although they have set up their ambition to enter Qinghai, if they want to realize it, they still have to do it step by step in a down-to-earth manner.

It is certainly not a simple matter to reverse the strategic disadvantage accumulated over the past 20 years since Dafeichuan, and once a war starts, it is very likely that it will last for several months or even more than a year.

In this future war, the highest strategic goal is to control the Qinghai region in the territory of Tuyuhun, and if it can be completed, it will be equivalent to taking back more than half of Tuyuhun's homeland.

It's tough, of course, but it's aspiring. As for the more realistic goal, it is to control the Haidong region in eastern Qinghai, advance the battle line from Chiling to Qinghai and stabilize it.

Qinghai is the essence of Tuyuhun, if you can garrison troops in Qinghai and maintain the invasion of Tubo, then Tuyuhun's supply ability to Tubo will be greatly reduced. Datang has a large base of Longyou to replenish blood, which is enough to consume the army around Qinghai and Tubo.

Therefore, in the next battle, the Zhufeng Fort on the first line of Chiling can no longer be passively defended, but must take the initiative to attack, one by one, uproot the various garrisons set up in Tubo at the western foot of Chiling, and open up a channel for the army to quickly enter the battlefield.

At the same time, Li Tong's previous strategic concept was conservative, and the manpower and material resources prepared were not enough to support such a protracted war, so it was necessary to increase overall planning, especially the integration of the armed forces in Zhuhu City.

Hei Zhi Changzhi is not optimistic about the combat effectiveness of Hu on the right side of Long, and the low combat effectiveness is secondary, especially these people are familiar with side affairs and have two minds, and the uncontrollability is too high.

Based on this, he proposed to transfer the eastern Zhuhu vassals to participate in the Longyou War, especially the remnants of Goguryeo after the destruction of the country, which were already distributed in a large number of Guannei Dao prefectures, and now they are levied to Longyou, which can not only replenish the troops, but also prevent them from taking refuge in Tibet.

Hearing Hei Zhi Changzhi's proposal, Li Tong was happy, and secretly felt that Hei Zhi Changzhi's proposal was a bit of a communiqué and personal vendetta, although Baekje and Goguryeo were on the same peninsula, but the relationship between neighbors was really not good. Even if each country has been destroyed, it will be difficult for the remnants to get along with each other.

Although Li Tong will not interfere too much in terms of specific tactics, he is still the main one when it comes to character coordination. Several leaders of the remnants of Goguryeo had a good relationship with him, and his remnant Li Tong had long been useful, which was used to supplement the war between Heshuo and the Turks, and by the way, to balance the Tiele tribes.

As for the Hu vassals who were transferred to Longyou, he also had a plan, that is, the Longbian Zhuhu represented by the Tuyuhun royal family and attached to the six states of Hequ. These people were swallowed up and chased by Tubo, and they had to attach the Tang Dynasty, and they all had a deep hatred for each other.

The hatred of the ninth generation can still be restored, not to mention that it has not even been a lifetime now. If you can't hold grudges, you won't be grateful, and if those Hu Bu don't come back to contribute, they will be killed directly without discussion, and keeping them will also be a problem for raising tigers.

Moreover, there is another meaning to recall the Tuyuhun royal family, which can be used to call on the remnants of Tuyuhun to rebel against the expropriation of Tubo in the name of Tuyuhun restoration.

Although this trick has been used by Datang before, the effect is not as expected, but now it is different from the past. At that time, the Tuyuhun royal family was expelled from the country because of the rebellion and separation, and it was attached to the Tang Dynasty. At that time, the Tuyuhun people rebelled, and they were not sick with the old king's thoughts. Moreover, at that time, Tubo was still digesting Tuyuhun, and the decree was mainly lenient.

However, after that, as the pace of Tubo waikou accelerated, Tuyuhun was an important supply place for soldiers and materials, and it was really a high-pressure water pump that continuously drew blood, and the remnants of Tuyuhun were naturally deeply disgusted with Tubo.

Lu Dongzan's father and son operated for decades, and in the end, Qinling raised troops against Zampu, but no one followed, and had to commit suicide helplessly, which shows the depth of the discord.

Just because it didn't work before doesn't mean it's useless now. Therefore, Li Tong wants to help Murong of Tuyuhun come back to disrupt the situation in Tuyuhun, as for whether to give Tuyuhun a return to the country, it is far away to say this, there is food and drink, what kind of bicycle do you want!

Of course, when Li Tong was calculating these things now, he didn't expect that far away in Haixi Fuqi City, there was a person who was highly in line with his ideas and was walking in front of him.