Li Xuan has a different opinion on this, what is there to support the Ninth Army at this time, even if Jinling approves it and lets them take the initiative, but this time it will be a month or two, to say the least, and the Tatars have already run away, so you can still stupidly stay in place and let you kill a wave!

Although Li Xuan was the emperor, he was also the emperor who personally led the troops to fight in his early years, and when he was in Zhengtai County, he also personally led the troops to carry out a bayonet charge!

Although every time I think about it, I am afraid, it was also a big fate at the beginning, otherwise, now this would be, and the grave grass is several meters high!

He who has led the troops, and he also knows the thoughts of the front-line generals, if the Tatars used fewer troops for vigilance, the generals of the Ninth Army will be willing to watch a large piece of fat pass in front of them, and they will be killed a long time ago.

At this time, what was sent to Jinling City was not a request for instructions, but a report of success!

Calculating the time, it is estimated that now the Tatars have run out, what are you doing to support the Ninth Army!

The Ninth Army asked for support, and then pursued it, I am afraid that it was not really to attack the enemy, I am afraid that it was still to increase the strength of the Ninth Army itself, and then launch a large-scale pursuit operation, not to kill the enemy, but to maintain the authority of the Ninth Army itself.

None of these generals on the front line are simple, and they will also have their own little Jiujiu.

In the case of the retreat of the Tatars from the Hetao, or even from the Toyoshu River, there is no doubt that the strategic role of the Ninth Army will be greatly reduced, and in this case, the Empire will certainly not do its best to support the Ninth Army, but will consider other directions.

Then, the situation turned out to be bad for the Ninth Army itself.

In order to maintain the important position of the Ninth Army, and also to ensure the important status of the generals of the Ninth Army, the Ninth Army will definitely not sit idly by and watch this happen, so they need a reason or opportunity.

Asking for reinforcements and pursuing the Tatars became the best reason for them.

But Li Xuan obviously didn't think so, he saw the small thoughts of the Ninth Army clearly, and he would not affect the overall situation because of the careful thinking of the Ninth Army.

Now it is not the Ninth Army that needs support, but the Fifth Army in Gansu and the Fourth Army in Shaanxi, after the Tatars move westward, the pressure on the defense of the northwest will increase exponentially, and the current troops alone will not be able to defend such a long defensive line!

The westward migration of the Tatars would bring about significant changes in the northern defense and security of the empire, some for good and some for the worse.

Let's talk about the disadvantages first, the disadvantage is that in the future, the defense in the northwest direction will face more huge pressure, in the northwest direction, the empire needs to face the Tatars, the remnants of the Warats, the Tibetans and so on at the same time.

At the same time, more importantly, the northwest is not a grain producing area of the empire, let alone an industrial area, and all kinds of materials that need to be consumed by the troops stationed in the northwest need to be sent all the way from the Central Plains, and the cost on this journey is quite huge.

The empire stationed 10,000 troops in the northwest region, and the various manpower and material resources required were twice or even more than the cost of garrisoning troops in Hebei and other places.

Supply difficulties, which would be the most significant problem the Empire would face in the Northwest.

Of course, although the situation in the northwest direction will be more difficult in the future, the westward migration of the Tatars will bring greater benefits to the empire!

The Hetao region and the Toyoshu River, which can be said to be the most abundant areas of water and grass in the East Asian grasslands, will completely fall under the control of the empire, and occupy this place, the empire will not only completely solve the problem of the northern border, but also provide the empire with a large area of pasture for grazing horses, so that the empire can get more horses, well, by the way, it can also develop animal husbandry.

Needless to say, these many benefits would not have been exhausted by all dynasties to occupy the above places.

It is only necessary to occupy the above-mentioned places, which requires the support of huge national strength, so in history, only the most powerful dynasties can occupy the above-mentioned places in the stage of strong national strength.

And once the national strength declines, or when the Central Plains Dynasty falls into civil strife, it is often unable to hold these places, and then they are invaded by foreigners, thus evolving into border troubles.

Today's Tang Empire, in all dynasties, is at its peak, both in terms of comprehensive national strength and horizontal comparative combat effectiveness of the army.

Such a powerful empire, at its peak, occupied the northern steppes inevitably.

Many people know this, and even Altan Khan himself can predict it.

It's just that he still had certain illusions before, thinking that he could still hold this grassland area under the blow of the Tang Empire, but what he didn't expect was that the army of the Tang Empire was so strong, even if the guns were sharp, and the infantry was strong, it was not time for the cavalry to be stronger and stronger year by year, and it was difficult for the Tatars to take advantage of the cavalry.

Under these circumstances, Altan Khan made the most important choice in his life: to abandon the Hetao and the Fengzhou River and lead the tribe to move westward.

Although the Hetao and Fengzhou River are fertile with water and grass, but the Tang Empire is on the side, if the Tatars can't bear it, there is no better place, and if they continue to consume it like this, their young and strong population of the Tatars will have to be consumed.

In the past few years of attrition wars, in the course of direct combat, the Tatars have suffered no less than 100,000 casualties among soldiers and civilians, which is not an ordinary 100,000 people, but 100,000 Tatars.

There are not many Tatars in total, and this time there are 100,000 casualties, which is enough to hurt the vitality of the Tatars.

He feared that if this continued drain, although the Tatar warriors could not have suffered many casualties, their people would have suffered many more casualties.

In war, it is not only the soldiers who directly participate in the war who are killed and wounded, but also ordinary civilians.

He was worried that if he continued to consume like this, they Tatars would die sooner or later, so he simply moved west while the main force was still alive.

Anyway, the grassland is very big, and it doesn't necessarily have to compete with the southern barbarians for the Hetao and Fengzhou River, they can completely move west!

As for how to survive after moving west, this is simple!

Grab the pastures of the Warats first, and then continue westward, following the path of the Mongol Empire's westward expansion, killing all the way, you will be able to obtain countless pastures and slaves.

It was with this intention that Altan Khan began to assemble the main force to the west as early as this spring, and in September, defeated the main force of the Warats, and then occupied a large area of the steppe.

At this time, Altan Khan did not hesitate to order the whole clan to move west.

Not only the 30,000 right-wing households directly under Altan Khan were relocated, but also many other affiliated tribes!

Altan Khan's sudden westward move was unexpected by the empire, which had intended to fight like this, completely destroying the Tatars through gradual encroachment and a war of attrition.

This extermination is not just about driving them away, but about completely exterminating them.

It's a pity that the Tatars ran away, and it was thousands of miles when they rode on horseback, and the Tang Army couldn't catch up even if they wanted to.

Even if you catch up, you don't dare to chase!

Thousands of miles deep into the steppe to pursue the Tatars, even a general like Li Chunjing did not have such courage!

It's okay to run, the Tang Empire can just free up its hands and stabilize the defense line in the north!

In the future, although the pressure in the northwest direction will be greater, after there is no pressure in the north, resources can naturally be mobilized to supplement the northwest direction, and the impact will not be too great.

The westward migration of the Tatars was initially a military secret, but soon became known to outsiders.

Because the Tang Dynasty newspaper of the Ministry of Rites officially reported the news that the Tatars fled in disarray.

The Tang Dynasty reported that under the continuous attack of our heroic and fearless Tang Army, the despicable and shameless Tatars lost their troops and finally had to flee in disarray.

And this is not the focus of propaganda, the focus of propaganda is that the Tang Empire officially seized the Hetao and Fengzhou Sichuan regions.

This is a great achievement in expanding the territory, and it is still the two strategically important lands of great strategic importance that are seized by the Hetao and the Fengzhou River, no matter which dynasty can do this, it can basically be boasted as the first emperor of the ages.

Of course, this kind of credit is nothing to Li Xuan.

What kind of person is Li Xuan, he is the Holy Monarch of the Ages!

The Son of Heaven defeated the whole world, conquered the Goryeo Peninsula, seized many territories in Fusang in the South Seas, and expanded the territory in the northeast.

Now take the Hetao and the Toyoshu River, that is the inevitable result.

This kind of credit is nothing to Li Xuan, but you can imagine how much credit the Holy Son of Heaven has now.

From ancient times to the present, there has been no emperor who is greater than our Ancient Sage, the Holy Son of Heaven Li Xuan, even if it is the Three Emperors and Five Emperors, it is one head shorter than our God Emperor Li Xuan.

Our Holy Son of Heaven is the Holy Monarch of the Ages, the Emperor of God, and the Son of Heaven!

You say that our Holy Son of Heaven is just an emperor through the ages? What a big boldness, is this to insult our Holy Son of Heaven?

Come on, pull it out and cut it!

The Tang Dynasty officially reported to seize the Hetao and Fengzhouchuan regions, which also announced the initial security of the empire's northern defense line, at least until there were major changes, Shanxi and Hebei would not have to face any foreign invasions.

Of course, for the whole north, there is still a little flaw, that is, the Chahar tribe and the Mongol tribes such as Duoyan Sanwei entrenched in the Liaohetao area.

For them, the Privy Council Operations Department of the Imperial Army also quickly came up with a battle plan!