Kutu Thorn is still a fool after all, where is Zhao Ta so kind, he rejected his request to return to Song, and put it back without keeping him as a hostage according to the custom, and bought the hearts of both their uncle and nephew at once. The relocation of their tribes to the Great Song Dynasty cut off their contact with other tribes and the opportunity to reunite, and even with the support of the Great Song Dynasty, it may be difficult to develop greatly.

The new site chosen by Zhao for the Mughurs was near the Song-Jin dividing line, which was said to facilitate the return of the Mughurs to their old places, but in fact, the entire 'safe zone' was thrown to the Tatars. According to the current form, the Jurchens gained a strategic buffer zone, but the Great Song Dynasty changed the Mugyu people's location, which at the same time facilitated their cross-border attacks on the Jin State, and even if the Song and Jin reached a peace agreement, they could not restrain their actions.

Because of the proximity of the nomadic land to the agricultural area, the Tatars were deeply affected and accepted the ideas of some farming culture, so they lost the 'pure and simple' nature of the nomadic people, and were known as the most 'intelligent' people on the grassland like the Wang people. But they didn't learn much about good things, but they learned a lot of tricks and tricks, and they became advocating interests and changing their positions. And the reason why they were attached to the Jin Kingdom at the beginning was because the Mughul were too powerful, they couldn't defeat them, and they understood that the enemy's enemy was a friend, and they could get great benefits.

The real people also need a force to fight against the Great Song Dynasty, so that the Tatars hit it off, they take what they need, it can be said that it is a pure relationship of mutual use, everyone also knows this, and naturally they have their own ghosts, and they themselves are not rich, and the aid is also picky, and they want to spend less money and do more. Therefore, the Jurchens are still a little worse than Zhao Ta in playing conspiracy. He spends money generously and does a good job on the surface. Even if he knew that he was being used by the Great Song Dynasty, he was willing to die for him.

After the Mughal people failed to move into the Great Song Dynasty. They are the largest tribe on the grassland, and they are now in the honeymoon period with the Jin Kingdom, I believe that after this winter, with the support of the Jurchens, the Tatars will be able to subdue the small tribes on the grassland, and kill all the 'residues' of the Mughal tribe, so as to unify the grassland and become the new overlord. With the nature of the Tatars, they will no longer be willing to submit to the Jin State, and conflict between the two sides will be inevitable.

At that time, the Jin Kingdom not only had to think about dealing with the Mughurs who were lurking around them and staring at them, but also had to beware of allies who could turn their faces at any time. This will involve a lot of energy, and more troops will need to be deployed along the border to prevent changes. In the past, the western and southern parts of the Jin Kingdom bordered the Great Song Dynasty. In the past, the troops deployed by the Great Song Dynasty in the west were mainly used to guard against the Tatar tribes of Western Xia and the nomadic tribes in the north and south of the desert, and the Song and Jin were separated by the Mughal and Tatar tribes, so the Jin State has always used the southern border as the center of gravity for defense.

With the great changes in the current shape of the Great Song Dynasty's Western Expedition, the Gaochang Kingdom was destroyed, the Western Xia surrendered, the Naiban and Kelie tribes of the desert were expelled, the Wanggu tribe was subdued, and the Great Song Dynasty had pacified the western border. Now that the Mughal tribe has moved into the Song-Jin border area, the Jin State will face the threat of the Great Song Dynasty. The Mughul also became a sharp blade that stabbed him in the waist at some point, forcing him to shift the center of gravity of his defense to the west.

Although the eastern part of the Jin Kingdom was separated by the sea, the Great Song Dynasty could land in the coastal area at any time by virtue of its naval superiority. They were able to attack them by land through the two bases of Guò Goryeo and Holadian, which made them careless. With the tension in the west, the Jin State placed its limited forces on the entire Song-Jin border like a pepper sheet, which would make it fall into fortifications everywhere. The embarrassing situation of weak defense lines everywhere is the so-called lost eastern fence and harvested mulberry......

Zhao Ta treated the Meng Wu Department with such a high-profile favor. The Jin State spies lurking in the Great Song Dynasty transmitted the news back to China as soon as possible, and the Wushu listened to it as if someone had poured a basin of ice water on his head when he was in a hurry. The mood is extremely heavy. Over the years, the Song and Kim countries have seemed to be calm on the surface, and problems have generally been resolved in the form of negotiations, and no large-scale armed conflicts have broken out. But both sides understood that the hatred between the two countries could eventually be resolved by a war, and the Song Dynasty was actively preparing, and the Jin State was not idle.

In the past few years, Wushu has presided over the government and has focused his main energy on the construction of border defense. He knew very well that after the Great Song Dynasty seized the northwest pastures, it changed the status quo of the lack of horses, and cavalry had become its main force. And after they lost control of the sixteen states of Yanyun, the southwest border was also in a dilemma of no danger to defend, as long as the Song army was willing to use the advantage of firearms to forcibly break through and block the northward march of the horses at any time.

Since the Song army had a powerful naval division, the vast ocean was no longer an insurmountable moat. Since the Jin navy was completely lost in the naval battle of Liaodong Bay, it was no longer able to re-organize a naval division of the same size to confront the Song navy, and only retained a small fleet to protect the inland river, so that the Song Dynasty navy could move unhindered along the coast of the Jin country.

Faced with the porous border line, the Wushu, who advocated attack, knew that their army could not defeat the Song army in field battles and confrontations, so the Wushu took out a large amount of money to mobilize hundreds of thousands of soldiers and civilians to build defensive facilities in the southwest-boundary trenches under the extremely tight financial situation.

In view of the actual situation, the design of the boundary moat built by the Jin State is unique, which is different from the Great Wall of the Qin and Han dynasties, which was built on the ridge of the large mountain and was held majestically on the mountain. Instead, it is built on the gentler grassland and on the gentle slopes and flat land of the foothills, and even when it is necessary to pass the girders, it is also built on the lower cols. There are four fortifications on the structure, such as outer moats, outer walls, inner walls, and inner moats, and the building materials are mostly earth or earth and stone mixture. Only some areas are tamped.

In the whole defense system, the boundary trench takes linear defense as the most cutting-edge defense means, while the military settlement defense system is located behind the boundary trench project, and some of them are arranged along the boundary trench line more evenly to form a number of troops on the defense line. the other part is laid out in depth from north to south, serving as a supply of manpower and material resources for front-line operations; There is also a part as a command system, which is located in the innermost part of the defense line, and through the guò information transmission project, the linear boundary trench defense is linked with the point-like settlement defense network, so that the boundary trench military defense project is more complete and optimized.

The defense engineering system is composed of a moat, a moat, a wall, and a horse face and a female wall on the wall. The boundary trench is built with tun earth, in the form of a trench, to prevent the war horse from rushing over. Dig the trench and take the soil to build the wall on the inside, and the depth of the trench and the height of the wall are at least more than one zhang, and the height can reach more than half a zhang. There is a horse face on the wall every 20 zhang, which is higher than the wall and sticks out of the wall, which can make the soldiers condescending and conducive to archery and strengthen the defense.

Depending on the strategic importance of the area, it is equipped with different types of defense facilities, such as single trench and single wall, single trench and double wall, and double trench and double wall. The double moat and double wall shape is composed of four parts: the main wall, the inner moat, the auxiliary wall and the outer moat from the inside to the outside, and the total width is ten zhang at the smallest point and up to 20 zhang at the maximum point. The width of each trench should not be too large or too small, too small to effectively prevent the war horses from crossing; If it is too large, it will be easy for the horses caught in the trench to leap out of the trench. An earthen fort is built every seven or eight miles along the boundary trench, which can accommodate four or five hundred people, and is the place where the troops are guarded.

The information transmission project on the NagaWorld trench line is an important part of the NagaWorld trench defense engineering system, which is completed by the Feng Tunnel and the sudden shop. The function of the beacon tunnel building is to call the police in time, light fireworks to transmit military information, and inform the higher authorities of the news of the front front. Corresponding to the beacon fire, that is, the beacon tower is arranged according to the spacing, and can echo each other in case of situation. The function of the shop is to exchange military information, ensure the safety of military material transportation, and can be used for the delivery of official documents or officials to temporarily stay, change horses, etc. It is similar in size to the garrison castle and has fortified facilities.

On the eastern coast, Wushu chose important places where ships could dock and built a number of walled cities, and erected wooden fences on the coast, digging trenches behind them, and ramming walled walls to resist the landing of the Song army. Coastal prefectures and counties have set up patrol navies, set up lookout posts, and deployed troops to guard and guard the coastal islands. In order to prevent the Song navy from tracing up the inland river from Haikou and going inland, he also pulled up iron cables at the mouth of the river and prepared many old boats, which could be scuttled and blocked the waterway once the Song army showed signs of invasion.

However, the blueprint is beautiful, the reality is skinny, although the vultures vigorously promote the construction of the boundary trench, for many years, only the infrastructure construction of key areas has been completed, many places still need to be improved, and more places just stay on the drawings and have not been implemented. Now that the Mughal tribe is located on the border between Song and Jin, there will inevitably be friction, which will lead to conflict, and if it is not handled properly, it is possible that the Song people will be involved, and a major war between the two countries will break out.

The Wushu used the Tatars to exterminate the Mughurs originally wanted to get rid of the henchmen in the west, and then used the Tatars to control the steppe for a long time and guard their borders to reduce the military pressure on the Jin State from the Great Song Dynasty, which was a good thing to kill two birds with one stone. And after the Mughal tribe was disabled, its strength was greatly damaged, in his opinion, no one would help a waste that lost its use value, and then without having to do it himself, the Tatars would be able to eat it so that there would be no residue left, and what was even happier was that Zhao Er couldn't say what he was suffering after eating dumb.

Wushu didn't expect Zhao Er, this kid, to be so 'good', to everyone's expectations, he took in the Mughuls regardless of his previous suspicions, and promised to help them take revenge. In this way, it not only demonstrated the 'noble character' of the Great Song Dynasty to repay grievances with virtue, but also turned a game of dead chess into action, and at the same time threw a powder keg that did not know when it would explode to the Jin State, forcing them to adjust their strategic layout, strengthen the defense forces in the west, and make a hard-won victory come to naught...... (To be continued......)