I'm in trouble.

Yes.

Jin, Yuan, Qing.

That is, Jurchen, Mongolian, Jurchen.

They are definitely the biggest border trouble of the Central Plains Dynasty!

Li Yan had long ago determined that he would completely pacify them, and he would never be soft on them, and when necessary, Li Yan could even issue a massacre order!

It's just that Li Yan hasn't found a suitable opportunity for a long time, Li Yan is very afraid of attacking rashly, in case he can't destroy it in one fell swoop, it will make them adapt to the fighting style of the Chinese army, and then they may not be able to eliminate these stubborn troubles.

Li Yan's worries are not unreasonable.

Now Dazhong, defeating Dajin and the Mongol tribes, it should not be a big problem, even if they are really united.

The point is that it is very difficult for the Chinese army, which is easy to defeat and seriously lacks mobility, to completely destroy the Dajin and Mongol tribes, especially the latter who have come and gone without a trace.

Therefore, Li Yan has never taken the liberty of making a move, and has always asked Yelu Dashi to take advantage of the contradictions between the various kingdoms and tribes in the grassland to divide and divide them, making them dog-eat-dog, so that they cannot be unified.

In addition, Li Yan also made people vigorously develop automobiles and motorcycles, wanting to solve the problem of mobility once and for all.

In fact

Long before the birth of the train, the first steam engine car was also born.

It's just that the development speed of automobiles is far inferior to that of trains, even if Dazhong has developed a relatively simple diesel locomotive train, the cars that can be put into use are still far away.

But then again, it's normal that cars don't just have to solve the problem of maneuverability, but also need to solve a whole host of problems such as spark ignition, water-cooled circulation, tubular frame, leaf spring suspension, rear-wheel drive, front-wheel steering, brake handles, and so on.

In addition, there is a key problem, that is, although Li Yan has asked people to look for rubber trees in all areas that Chinese can reach, but until now no rubber tree has been found, and without rubber, there is no tire with high bearing performance, traction performance, cushioning performance, and without such tires, if the car wants to be really put into use, it is an empty word.

The most important thing is that for road cars to be truly mobile, they must have road support.

There are so many problems that need to be solved, and in Li Yan's mind, I am afraid that in another ten or even twenty years, there may not be a real car that can be put into use.

In this case, if Dazhong wants to destroy the Dajin and Mongolian tribes on the grassland, he has to rely on traditional war horses.

Therefore, over the years, Dazhong has been trying his best to breed and buy war horses.

Tietong in the spring of the seventh year.

After completely pacifying the Western Xia and getting enough rest, Wu led 80,000 troops west out of Yumen Pass on the orders of the imperial court, and Zhang Xian also led 70,000 troops to leave Longyou, and the two armies fought into the sand sea of the Western Regions like two dragons.

After repeated study, Li Yan, Xu Guanzhong, Zhu Wu, and others finally decided that they must not fight on two fronts, especially when there were strong opponents such as Dajin and the Mongol tribes among their opponents.

In addition, it is still the original problem, that is, the mobility is not enough, so that Dazhong cannot destroy Dajin and the Mongol tribes in one fell swoop.

Therefore, Li Yan and others finally decided to solve the problem in the northwest first.

Only then did Wu and Zhang go out of the Western Regions, preparing to completely merge the Western Regions into the territory of Dazhong.

In the face of the menacing Chinese army, the king of the Uighur kingdom of Gaochang thought for a long time, but did not organize a rebellion, and surrendered to Dazhong.

Wu sent people to "invite" all the dignitaries and nobles of the Uighur kingdom of Gaochang back to Yanjing.

At the same time, Lehe, who was sent by Dazhong to govern the Western Regions, and a large number of experienced officials also arrived in the Western Regions.

After this, Wu and Zhang Xian began to sweep away all the rebel forces in the Western Regions that did not obey the rule of Dazhong.

In addition, for those various forces that obeyed the rule of Dazhong, Lehe and others also dispersed and forcibly relocated them, and forcibly stipulated that each tribe was not allowed to have more than 100 people and more than 100 tribes must be dismantled, and among the disassembled tribes, only one tribe was allowed to stay in their original territory, and the rest of the tribes must move to distant places.

Just as Dazhong was recovering and digesting the Western Regions, the decisive battle between the expeditionary force and the eastern Qarakhanid Dynasty in the Kashgar region had also come to an end.

There was no suspense about the outcome of the war, the Chinese army defeated the eastern Qarakhanid army with absolute superiority in weapons and equipment and advanced tactics, and Yue Fei even sent Wang De to directly attack the capital of the eastern Qarakhanid Dynasty, Balasagon, and captured the king of the eastern Qarakhanid Dynasty and all the royal family.

Seeing that the Chinese army was so good at fighting, Qarlu and Kangli rebelled and dealt a fatal blow to the Qarakhanid dynasty in the east.

The mighty eastern Qarakhanid dynasty was overthrown.

Just as the expeditionary force was about to continue its westward advance, an envoy sent by the imperial court found the expeditionary force, and the imperial court asked the expeditionary force to temporarily stop its westward advance and return to China immediately.

The expeditionary force went on this expedition for nearly four years.

During this period, although the expeditionary force also rested, it did not rest for too long.

Therefore, some of the veterans of the expeditionary force are really tired, and it is time to take a rest.

The most important thing is that the expeditionary force still has 670,000 war horses in their hands, and these war horses are the key to pacifying the Dajin and Mongol tribes in the northeast region.

Therefore, Yue Fei and others followed the orders of the imperial court to loot the horses, cattle and sheep of the Qarakhanid Dynasty in the east, and then escorted the royal family, clans, and dignitaries of the Qarakhanid Dynasty in the east back to Beijing.

At the same time, Dazhong sent General Lü to lead a group of elite officials to the eastern Qarakhanid Dynasty to take over the place.

Soon after the expeditionary force returned to Yanjing, Wu and Zhang Xian completely pacified the Western Regions, turning the Western Regions into an inseparable part of the territory of Dazhong, and the territory of Dazhong was officially moved to the Tianshan region.

Even if you don't count the eastern Qarakhanid region on the other side of the Tianshan Mountains, Dazhong's territory has surpassed the Tang Dynasty to become the largest dynasty in history.

Next, Dazhong still did not attack the northeast, but the fifth, seventh, eighth, and ninth military regions simultaneously sent troops to the southwest region to recover Tibet.

The four major military regions fought at the same time, how could the divided Tubo resist it?

In just a few months, the Lhasa, Ali, Yaze, Yalongjuea and other forces in Tibet either surrendered or were destroyed, and all the royal family, royal family, and high-ranking officials and nobles were all escorted to Yanjing.

At the same time, Dazhong sent Hu Quan to lead a large number of officials to take over the Tubo region.

So far, except for the northeast region, all the border problems in Dazhong have been solved.

The time has come to the eighth year of Tietong.

This year, Li Yan was forty-nine years old.

In the eyes of people in this era, Li Yan has begun to age.

But Li Yan feels that his physical function is still similar to that of a young man in his twenties, and he can control twenty or thirty women in one night without being tired, and Li Yan can even easily defeat his own soldiers, who are known as "the first warrior in the world".

Li Yan didn't want to leave the Northeast issue to future generations, because they didn't know how harmful the Jurchens and Mongols were to the Central Plains Dynasty.

Therefore, while he was still young, Li Yan transferred an army of one million from the nine military regions of Dazhong, gathering the five founding marshals of Yue Fei, Wu, Liu, Han Shizhong, and Yang Yizhong, and the six founding generals of Zhang Xian, Wang Yan, Wu, Guo Hao, Wang De, and Li Yanxian, to form an unprecedentedly powerful Northern Expeditionary Army. Leave an empire that will last at least a hundred years for future generations!

……