This is the 30,000 Liao army from Tokyo, although in terms of elite, they can not be called first-class, in terms of armor, only 3,000 heavy cavalry, the rest are light armor, or leather armor, but these are the only forces that Tokyo can mobilize.

The general who led the army was Xiao Zonghan, who thought that he was a descendant in his forties and the supreme military commander in Tokyo, but his ability was quite limited.

The really elite ones all followed the Liao Xingzong Emperor's personal expedition, and only those who were a little worse, or not too important, were appointed to guard the city.

The soldiers are fast, and at this moment, there is no room for mistakes, I didn't know before, but once I knew, then I will definitely support as soon as possible.

The Liao army chose the camp of the rapid march, and everything was to make changes for the march, so there was no cordon, and it was even more sparing horsepower.

It's not that the commander doesn't understand anything, no matter what Xiao Zonghan says, he also has a certain amount of battlefield experience, and follows the Liao State to fight in the south and the north, the reason why this is the case is that it is an internal march, even if there was a disturbance on the Liaodong Peninsula for a while, but from Tokyo to the front of Zhejin Mansion, it should be safe.

The unobstructed rapid march, when the horses galloped, the smoke and dust were huge, this is the most vivid example, in the telescope, look at the past, it is not a cloud of smoke, when the wind blows, the neat military appearance, is revealed.

The person in charge of the lookout, judging little by little, saw at least more than 5 Liao army flags, conservatively estimated, at least more than 18,000 people, plus a little exaggeration, there is no problem in reporting 25,000 people.

Soon, the language was organized, and then handed over to the standard-bearer for translation, and the agreed voice suddenly sounded, and the Liao army was still more than 70 miles away, and it was in the middle of the horse march, and I was not worried about being discovered by the Liao army.

The same sound came and went, quickly transmitted, and soon, it was transmitted to the fortress, and all the flag-bearers responsible for the transmission were already in place, and through the sound contact, after confirming that it was correct, it began to be transmitted.

Said very quickly, but in fact, the speed of transmission of such a flag is not very fast, because the relationship between the telescope does not have to be like the beacon tower on the Great Wall, only two or three miles away, but in the mountains, the relative ruggedness, more than 30 kilometers away, a total of 5 transits.

One by one, one by one, again and again, the exchange, from one place to another, it takes about 180 breaths, 5 transmissions, and about the same time for a stick of incense, but this is already very fast.

The Liao army was more than 70 kilometers away, and this side already had most of the information of the Liao army, 25,000 people, most of whom were lightly armored or unarmoured, and lacked heavy cavalry, which showed that this was a second-rate unit that came to the rescue urgently, not a key force.

The guard general knows in his heart, if he chooses, of course he wants to confront the main force of the Liao army like the Tielin Army, so the credit will be greater, but the arrival of those main forces is not so few, it is often hundreds of thousands, and when the time comes, the pressure on the entire defense line will become greater.

After the sentry position was determined, the direction of the Liao army began to retreat, and the current Northern Song Dynasty army was able to make such a reconnaissance, which was already good, but guerrilla warfare, or in the mountains and forests, fighting with the other party, this possibility was not.

In fact, in the era of cold weapons, although guerrilla warfare existed, it was mostly cavalry, and only cavalry had sufficient mobility ability, and after long-distance maneuvering, it could still ensure physical strength and could carry out an attack.

For the infantry, if you run a long distance, even if you overcome all difficulties and dangers and reach the destination, can you pick up arms and have a tough battle with the other side, the labor expedition will always be the most disadvantageous place, once used by the enemy, the consequences are unimaginable.

In fact, the speed of the Liao army was very fast, more than 140 miles away, they only took most of the day, they walked more than 100 miles, probably more than 40 miles away from Shanhaiguan, camped.

The location of the fortress has arranged a lot of traps in advance, for example, the horse trap, a lot of digging has been dug at the same time, and at the same time of the horse pit, a large number of barbed wire has been irregularly arranged, and this kind of wire specially designed to stop the cavalry is thicker and sharper than the iron wire in the era of thermal weapons, which is to be arranged, and it takes a little longer to arrange it.

Some of them were arranged in advance, some of them were prepared later, plus some other arrangements, how to strengthen the city defense, and similarly, some arrangements specifically for heavy cavalry were reduced and canceled, which was also a targeted layout.

Before, they had analyzed that the first batch of Liao troops to come, who were the people, the Tielin Army, was excluded first, that was the elite force of the Liao army, all the time, they had been following Liao Xingzong, and now they were fighting with the Jurchens in the north, and it was impossible to come over.

25,000 people, maybe before, the Liao State used so many men and horses, and even the three levels would be shaken, but now, in the eyes of the guards, these are all military exploits.

4 fortresses of different sizes, each other is horns, the defensive strength is much greater than that of a single fortress, and on average, there are about six or seven hundred people in each fortress, these are not untrained, all of them are forbidden troops, and they are good hands among the forbidden army.

The most important thing is that behind him is the Zhejin Mansion, from the Zhejin Mansion to help, it may only take two or three days, even if it sweeps the entire Zhejin Mansion, and then come to support, there are twenty or thirty days, and the four fortresses can't hold for twenty or thirty days.

The characteristic of the fortress is defense, the comprehensive defense condition, itself, is designed to be surrounded, 4 seats are put together, in each of them, there will be a dead angle position, relatively speaking, the defense is higher, unless they can pull out one.

How difficult it is to break through a fortress, the deduction that the Forbidden Army and the Privy Council have made, under the premise that the military rations and various supplies are sufficient, it is possible to attack continuously for more than 15 days, and this is still the premise of not stopping day and night.

With the design of the fortress, the losses of a continuous day of attack may be thousands, and the continuous day and night attacks, the loss of siege will also be very large, may be tens of thousands, or even tens of thousands.

For a fortress with only 500 defenders, pay the price of tens of thousands, which no army can afford, one is still like this, let alone four.

That is to say, from the moment the fortress of Shanhaiguan was erected, this fortress could not be broken in a short time, and there was still confidence in this.

Themselves, they discovered the movements of the Liao army so early, and even made some judgments about the place where the Liao army camped, but they still couldn't resist attacking, what is more powerful protection than the fortress, sneak attack the opponent's camp of 25,000, even if it is successful, what can more than 2,000 people do, or hide in the fortress.

When Xiao Zonghan passed through the Shanhaiguan, he still sent a horse to explore, this is not an unobstructed plain, this is a canyon, and if it rains, the rocks in the canyon will still have an impact, at least, the horses will still be injured on the rocks.

But after such a look, they found that at the end of the canyon where there were no buildings, several buildings were erected, and they didn't care at first, thinking that they were built on the side of Zhejin Mansion, but after getting closer, they found that these buildings were too high, and they were obviously not the style of the Liao Kingdom.

Under the premise that things are abnormal, there must be strangeness, Xiao Zonghan ordered the follow-up troops to stop slightly, and then sent a scout horse to investigate carefully, maybe they don't know the fortress, and the barbed wire can't understand it, but some horse rejection and horse traps, they still understand, this is obviously fortified.

His own people are still enemies, this thought flashed in Xiao Zonghan's heart, and he quickly dispatched personnel to contact him.

The Song army, never thought about it, to deceive the Liao army, the fortress is different from the city, it is not suitable to earn in, deceive people into the city, there is nothing that can be accommodated, and it is not easy to control, since it is going to fight, for the combat effectiveness of the fortress, and relatively more convinced, simply show the carriage and horses.

Although the banner of the Northern Song Dynasty was not hung high on the top of the fortress, everything was not covered.

The soldiers guarding the high places are still wearing the military uniforms of the Song Dynasty, and there are a lot of things from the Song Dynasty that are exposed.

Tanma is also a more experienced one, did not approach rashly, but went up from the back, observed from some similar heights, and sure enough, after seeing the costumes of the Song Dynasty, he immediately returned.

Xiao Zonghan was a little anxious, faintly, he had an ominous premonition, this would not be the Song Army, because there was no need for the Liao Kingdom, and these buildings would not be built here, this is a complete waste.

Sure enough, the reports of several Tanma, although there was no clear banner, proved that they were the Song army, but the defenders that had been shown were obviously the costumes of the Song army.

This can already be proven, and next, he has to be careful to see if he can go around it, or avoid places like the horse pit.

However, after several attempts, a large number of scouts were dispatched, and even small cavalry were sent out in many ways, but in the end nothing was achieved.

4 strange tall buildings, blocking the intersection, if you want to pass, you have to pass through the middle of the building, there is almost a gap of more than 500 steps in the middle, it is possible to pass, but in front of the obviously hostile enemy buildings, not to mention those shields and defenses, even if there is no cover, he does not dare.

The average range of the shooters in the Northern Song Dynasty is about 100 to 150 steps, that is to say, as long as there are shooters on the opponent's buildings, then the troops that pass through this will be exposed to the shooters, and the most important thing is that if they choose to pass sparsely, the losses will be very huge, even if they are concentrated, the opponent's shooters shoot casually, and the losses will be unbearable.

What to do? Xiao Zonghan is not a belligerent general, this time he rushed to the aid of Zhejin Mansion, but also with the idea of not seeking merit, but seeking no fault, it is best to be able to break the siege, and if he can't solve it, he will protect himself first.

But now, here, there is such a building, which gives him an ominous premonition, the Northern Song Dynasty has gone deep here, will it have captured Zhejin Mansion, Xiao Zonghan even had a plan to retreat in his heart at this time.

The city defense of Zhejin Mansion, as well as the importance of Zhejin Mansion, did not allow him to retreat without even one attempt, and according to the results of the report, the Song army attacked Zhejin Mansion, that is, more than 20 days ago, more than 20 days, is it enough for them to capture Zhejin Mansion?

Perhaps, this is just a bluff, because although several buildings are high, they are not big, at most a few hundred people are stationed, perhaps, the other party is just a partial division, block it here, and help the Song army capture Zhejin Mansion.

It was this kind of thinking that made Xiao Zonghan stay, and tried to clean up all kinds of traps.

But when it was time to clean up, Xiao Zonghan found out that the other party was difficult.

The Song army in the building never came out, but once Xiao Zonghan cleaned up the traps and barbed wire, he would definitely interfere, and the means of interference was bows and arrows.

This huge, I don't know what kind of bow and arrow thing is, the range is very long, at least 250 steps, almost all the areas and traps of buildings, and it is quite dense, small troops, I am afraid that they will be shot without even touching the trap, and if there is a large force, the loss is too huge.

After several attempts and the loss of almost 500 men, Xiao Zonghan finally lost all patience and began to choose to attack.

The army of 30,000 people was divided into four directions, pressing towards the four fortresses respectively, not directly pressing one of them, it was not that Xiao Zonghan was more greedy and wanted to attack the four fortresses at one time, but the design of these fortresses made the army almost alone in front of each fortress not much.

If it is a siege expert in the Northern Song Dynasty, it can probably put down 10,000 people, and if there are a large number of archers, it can almost put down 30,000.

Xiao Zonghan is not familiar with siege, and most of the cavalry in his hands, all 5,000, is already the limit.

In his opinion, 5,000 people attacking the defense of hundreds of people does not seem to be fierce, even if there is no result, it will not cause much loss, but it is a pity that he underestimated the defense of the fortress.

Before, it was just a routine operation, just to prevent them from destroying these defensive facilities, and more, it was to paralyze, although the fortress was very high, but there were only a few hundred people, even if it was an archer, it was only three or four hundred, these seemed to have little impact on the attack of their army, but in fact, once the army attacked, the combat effectiveness shown by the fortress was extremely terrifying.

Almost all of the 5,000 cavalry dismounted, and attacked with some siege facilities of simple construction, dodging barbed wire and horse traps, and when they were about to reach the bottom of the fortress, they found that the siege engines were not high enough, and even the shortest fortress was far higher than the walls they had seen.

After putting a large number of Liao troops in, the longbow began to exert its might, almost 1500 longbowmen, began to attack wildly, and all visible enemies, dense camps, became the battlefield of longbow killing.