"General Sun, are you saying that the real target of the Liao people this time is actually my Yanmen Pass?" Tian Boyuan looked at Sun Tu in surprise, and at this time, a gust of night wind blew, which made him shudder. If this matter is true, it is quite dangerous, and if it weren't for Sun Tu who said this, he would probably shake his head and not believe it at the moment.

Sun Tu glanced at the dark environment around him, nodded and said, "This is a very likely thing, you want to ......" He quickly elaborated on his previous considerations. The stakes are very high, and he doesn't dare to slack off, as long as he thinks about it, once Yanmen Guan really falls because of their momentary negligence, the consequences will be too terrible.

What is Yanmen Pass? It is one of the important gateways of the Great Song Dynasty to block the strong enemy of the northern Liaoguo Iron Cavalry, and the Yatou Pass and the Wuguan are collectively called the North Three Passes, and it is also the most important of the three passes, the easiest to defend and the most difficult to attack, and the closest to the hinterland of the Central Plains. Once this place is broken, it will completely expose the entire Central Plains, and even Tokyo Bianliang, to the iron hooves of the Liao people.

Of course, with the difficult situation of fires breaking out everywhere in the Liao State now, it is naturally impossible for them to have the strength to raise a large number of troops to fight in the Central Plains. However, once the Yanmen Pass is lost, it is bound to make the front-line army fall into a chaotic situation in an instant, and then hundreds of thousands of troops will completely lose their fighting spirit.

Sun Tu could think of these things, and Tian Boyuan was naturally the same, so after Sun Tu pointed out that the Liao cavalry suddenly arrived at Yanmen Pass to help the front-line war, and only broke through the pass, his face became more and more nervous and dignified, and even his breathing became short: "Could this be true?" General Sun, it's not that the lower officials don't believe your judgment, but after all, the matter is big, and my Yanmen Pass is a rare Xiongguan, even if there are 100,000 elite Liao troops, don't think about breaking through it easily, right? ”

"If it is a frontal attack, I can defend Yanmen Pass as impregnable, but the soldiers on the battlefield have never been tired of cheating. What's more, now Guanzhong is in such a situation, if I expect it to be correct, they must be fighting the idea of the inside and outside, once someone secretly opens the gate, Guanzhong will inevitably be in chaos, and it will be difficult to hold it. Sun Tu said solemnly.

Tian Boyuan pondered for a long time, and felt a little agreed. Yes, now there are not only defenders in Yanmen Pass, but also tens of thousands of people. And if what Sun Tu said comes true, then there must be many Liao spies hidden among these people, and they will be able to completely disrupt the Yanmen Pass when they set fire to it everywhere. Those people are not soldiers in the army who have experienced a hundred battles, once there is really chaos, even if these people are unintentional, they will be used by the Liao people and become the last link that makes Yanmen Pass completely out of control.

The more he thought about it, the more he panicked: "This...... How good is that? Does General Sun have any good ideas? ”

"Actually, you did something wrong early in the morning, this is Yanmen Pass, how can you let so many unrelated people wait in Panhuan Pass? If we want to be safe, we must clear these people out and set up another station outside the pass. ”

Listening to Sun Tu's first remedy, Tian Boyuan smiled bitterly: "General Sun, in fact, although the subordinate is not talented, he has already noticed this problem. It's just that this is what Du Jianjun insists on doing, and even if I dissuade him many times, I can't change it. ”

"Huh?" Sun Tu was stunned for a moment: "Who is Du Jianjun?" ”

"Oh, he is an important official sent by the imperial court named Du Changguo, but because he was sick before, he never came to see General Sun. And when those people arrived that day but were blocked in the pass, I originally planned to arrange them in the south of the pass, but the Nadu prison army thought that this really hurt the virtue of the imperial court, and the people who had worked hard to come north should not be allowed to sleep outside the wind and eat outside, and insisted on settling them in the city, which is why today's situation is today. ”

"Is there such a thing?" Sun Tu thought about it for a while, and he could also understand the other party's difficulties. Even if it is at the border, it is still difficult to escape the reality of the Great Song Dynasty's Wengui and martial arts. Therefore, a prison army can set such an extremely unreasonable strategy, but Tian Boyuan, as a defender, can do nothing.

"In this way, early tomorrow morning, you will do as I say, and send the people in the customs as soon as possible. Leaving them here is not respectful, it is harmful. If the Liao people really enter the pass, they will only die faster if they stay here. As for what Du Jianjun is held accountable, it will be up to me to deal with it. Sun Tushen knew that the situation was urgent, so he simply gave an order.

Tian Boyuan already had his own ideas, but after getting Sun Tu's words, he was even more happy, and hurriedly responded.

Then I saw Sun Tu and said: "There is another point that is more crucial, that is, to find out the Liao spy who is hiding in Yanmen Pass, especially the person who keeps ventilating and reporting the news." ”

"That's easier said than done." Tian Boyuan was a little embarrassed. Now there are 70,000 or 80,000 soldiers and civilians in Guancheng, unless they inquire about the past one by one, how can they find out the identity of this person? And it is almost impossible to check one by one, so in his opinion, this is a completely unsolvable problem. Otherwise, he would have investigated it as soon as he had any suspicions.

But Sun Tu said: "There is an opportunity right now." I believe that the spy who passed the news will definitely spread some important changes in the customs in time, such as the movement route of the previous grain transportation team, and the fact that you sent troops to destroy it. And I led the army to Yanmen Pass today, which should be a big deal, do you think he will not want to do everything possible to send it out of the pass? ”

Tian Boyuan suddenly realized: "What General Sun said is true, but when and where will he deliver the news?" ”

"The military situation is in full swing, and if I expect it to be true, it will probably be tonight. As for how to pass it, although I don't know the means, one thing can be concluded that it must go to the area of the northern wall. Sun Tu said, glancing at the black rumbling wall: "Perhaps, the people have gone over there now, we have to hurry." ”

These words made Tian Boyuan's spirits lift even more, even if it was past the third watch at this time, he still said urgently: "Then let's go over and have a look?" ”

"Yes, but remember to be secretive, don't startle the snake!"

￥￥￥￥￥

In the middle of the night, the wild goose gate was closed, and the cold wind was howling. Especially located on the north side of the wall, because of the unobstructed on all sides, and because everyone is empty, the cold wind is even more raging like a knife, blowing the scattered braziers are about to be extinguished.

In such an environment, of course, the night watchmen could not stay by the wall honestly, but all hid in the arrow towers in the rear, and only every half an hour, one or two people went out to patrol. This is not a dereliction of duty, after all, there are few night attacks these days, let alone such an impregnable pass at night.

It's just that they are hiding in the arrow tower to roast the fire, but they are also a little bored, they don't sleep naturally, and they can't drink and gamble for money, so they can only brag and joke. A man here had just told a not-so-funny meat joke that caused everyone to laugh, but one of the soldiers suddenly stood up and walked towards the door.

This made the captain on the side feel a little strange: "Lao Guan, it's not time to patrol yet, where are you going?" ”

"Oh? I drank too much water before, and went outside to pee. The old Guan replied with a smile: "It's better to take advantage of the opportunity to patrol around, so as to save the brothers from hard work." ”

"Ahem, if you want to say that you are enough brothers, okay, you can go and see. Nothing can happen, just get the meaning. The captain was quite happy, after all, it was freezing outside, and everyone was reluctant to go out, so it would save him a lot of trouble to have someone to burden him.

Lao Guan hurriedly agreed, then opened the door and came out, and skillfully closed the door again. In the rear, there are still people whispering praise: "If you want to say that Lao Guan is an authentic person, he is still guarding the south at noon, and at night he invited himself to come here to suffer from the cold." And now it'......"

Hearing the praise of these brothers, Lao Guan's face showed a smile. It was only after taking two steps that the smile on his face became a little strange and sneering. These idiots would never have dreamed that they were doing all this just to get this crucial news out there.

That Sun Tu actually led the army to Yanmen Pass, although he only got 5,000 people, but it was a big variable for the entire plan to seize Yanmen Pass. He had to get the people outside to be prepared, so even if it wasn't the time to deliver the news as agreed, he had to give it a try.

Even if he was in charge of important matters, Lao Guan's mentality was still stable, and he walked calmly to the head of the city, looking like he was on patrol. It wasn't until I came to a secluded corner that I unbuttoned my robe and peed on it. Then he took a bow and an arrow from the corner, took out a piece of cloth full of words, and skillfully wrapped it around the arrow.

He had done this many times, so he was naturally very familiar with it. Whether it's the location of these spare bows and arrows, or the way to wrap the cloth and release the arrows, you don't have to think about it.

And just as he put the arrow on and was about to shoot his bow, a cold voice sounded at the head of the city, which should have been quiet: "Sure enough! The fox's tail is exposed! This made Lao Guan's body suddenly shake, but before he could react, the wind behind him suddenly rose, and seven or eight soldiers in the army had already rushed up, and they controlled his hands and feet at once, and pressed his whole person down on the wall, and the bow and arrow in his hand failed to send out, and fell to the ground.

It was only at this time that Sun Tu and Tian Boyuan strode up, the latter was even more pale, took the arrow, took off the cloth on it and unfolded it, and swept the torch that had been lit, he knew that what Sun Tu said was really not bad, and this spy really roared and wanted to pass on the news that Sun Tu led the army into Yanmen Pass.