On the wall of Yanmen Pass, more than 20 soldiers who were vigilant knelt all over the ground, all of whom were frightened, but they did not dare to beg for mercy. Aside from them, the old gate was dead, with black blood oozing out of their mouths and noses, and they were poisoned to death. This made Sun Tutian Boyuan and the others in front of them also tightened their eyebrows and looked solemn.

When they took the people to capture this spy from Liao, they were quite relieved. But they never thought that in the blink of an eye, Lao Guan, who fell into control, his body twitched, his face distorted, and he disappeared for a moment. Sun Tu and his friends didn't even have the chance to ask a question. Obviously, this guy hid a poison bag in his mouth early in the morning. Once he was discovered and arrested, he committed suicide without hesitation.

The movement here quickly alarmed the night watchmen who were still burning fire in the arrow tower. When they heard the sound, they were naturally guilty when they saw that it was Tian Boyuan who brought people to come. After all, they were suspected of being lazy in the arrow tower. When they saw the dead Lao Guan and then generally knew the identity of the Liao people, they were so scared that they almost lost their souls. If this makes people suspect that they were also a spy from Liao people or had any collusion with him, not only would they be unable to protect their heads, but even their families would be implicated.

In this case, they could only kneel down and admit their mistakes, and then repeatedly said that they were innocent. However, Sun Tu really didn't suspect them, but just looked around Lao Guan's body, then looked at them and asked, "On the fourth day of this month, the twenty-one of last month, and who will you watch here for the 16th day?"

When the few people heard this, they quickly thought about it carefully, and then several people said repeatedly: "Little one, I was watching the night in the city that day."

"What about him?" Sun Tu pointed to Lao Guan's body on the ground: "Are he present? And have he left you on excuses like tonight?"

Now Tian Boyuan and the others quickly understood Sun Tu’s intention. The former only recalled for a while, and then nodded: “Go back to the general, he was indeed present in those days, just like today. He said he wanted to go and leave for a while.”

"Also, it was Xiao Qulai who was watching the night today, but because he got the cold, he was replaced."

Sun Tu glanced at Tian Boyuan, and the latter nodded in agreement. The three days Sun Tu mentioned just now were when the troops and horses were out to suppress the Liao cavalry. This was a confirmation. The reason why the Song army was lost all of them was because this guy passed on such an important news.

This made Tian Boyuan even more angry, and he wanted to go forward and kick the corpse and kick it out a few times. However, Sun Tu seemed quite calm and suddenly ordered: "Come on, go and see what else is on him. In addition, send someone to his residence to search carefully and see if there is a trace."

The soldiers beside him were all defenders in the inner gate. He was a little hesitant when he heard Sun Tu's orders, but after Tian Boyuan nodded, he quickly clasped his fists and responded. At the same time, he said, "Take all of these people down and take them carefully." He refers to the soldiers with Lao Guan. Although he also believed that these people were innocent, he still had to leave the process of leaving. At least these people could no longer go to Guancheng during this period.

"How could this be so? Is this guy so decisive? He actually took poison and committed suicide by taking it." After a while, Tian Boyuan sighed in surprise. The scene just now had a great impact on him.

"It seems that this person should be a real Liao person, not a small person who is only used to convey messages by them." Sun Tu had to calm down a lot and thoughtfully. In fact, this is understandable. Although Lao Guan was just the most inconspicuous little man in Yanmen Pass, his role was really great. At least every key message should be passed on by him. If he changed to a higher status general and official, it would be impossible to easily go up to the city wall like him and not attract attention.

At this time, the soldiers who searched him had already stood up and reported: "The two generals, there is nothing else on him except a wooden waist sign." But he found nothing.

But this was as expected by Sun Tu, and there was nothing to be a pity, so he nodded. However, Tian Boyuan said a little puzzled: "If it is true that he was a Liao person, it would be a very expensive one. As far as I know, this guy has been in my Yanmen Pass for five or six years, and he has never had any abnormal behavior in the past. Could it be for this matter?"

"It's just a Fuzi from the beginning. Isn't it going to be useful now?" Sun Tu glanced at the corpse: "If it weren't for him, we wouldn't have had the dilemma today. But there is one thing I still think there is something wrong. He shouldn't be the key target we want to dig out. It's just that his death can't ask more from him."

Tian Boyuan nodded: "Yes, he is just an ordinary soldier. It is impossible for him to know the specific situation of the movement of troops in my pass, and it is even more impossible for him to know the route of the grain team and inform the Liao people outside the outside world."

"And ordinary soldiers, even spies, cannot read, so if you want to know the identity of the person behind them, you have to fall on this thing." Sun Tu said, and shook the cloth with words on his hand, which was written on it, rather than Khitan.

"Yes, maybe through this handwriting, I can find out the identity of the person behind the scenes." Tian Boyuan was excited when he heard this, and quickly took the cloth from Sun Tu and put it to the fire to look at it. However, he was just a rough man and didn't know a few words at all, let alone identify any words. After only a while, he couldn't see the reason, so he could only hand it over to Sun Tu again: "General Sun, can you see any clues?"

Sun Tu also smiled bitterly and shook his head: "I can't do this, let alone having a heart, it's not difficult to cover up my handwriting. So the only thing we can tell from this word is that the person behind it must be able to read the text."

"This is too inaccurate. Although most of the ignorant Qiu Ba in Guanzhong is ignorant, there are also many people who can write and calculate..."

"What if it is also possible to accurately grasp the military confidentiality of military personnel such as military mobilization and military ration transportation?" Sun Tu hurriedly expressed his meaning, which made Tian Boyuan look a little surprised: "If you say this, usually the minor officials in charge of logistics affairs can be ruled out, and only the three or five counselors are the most questionable, and that is, that is..."

Seeing that he looked embarrassed, Sun Tu said to him: "There is also the military supervisor Du Changguo. I believe that Guanzhong will not hide any decisions, right? Moreover, there are many people who put Yanmen Pass in this current dilemma, and he has many suggestions and persistence." "That's right..." Tian Boyuan took a deep breath, then nodded and said: "It's just that we have no other evidence." That was a sixth-rank civil servant, but he was not a mere guard of Yanmen Pass who could control it at will.

However, Sun Tu didn't have such many concerns, but just said with a cold face: "This matter is very important. In order to prevent the Liao people from taking advantage of the opportunity, we must take advantage of it as soon as possible. As for evidence and clues, it is not too late to search in his room when he sees him." He even dares to kill a big man like Gao Qiu, so how could he care about a mere military supervisor?

Seeing that Tian Boyuan was still hesitating, Sun Tu said in a solemn voice: "General Tian, ​​the military situation is like fire, but we can't stand it. Now that such a thing happens on the city wall, it will soon be known to many people who are interested. Even the evidence will not be found at that time. And I have everything, and it is my idea to capture the military officer Du..."

"General Sun said that it is related to the safety of my Yanmen, and even if there are any consequences, I can't take care of it. You are a guest and I am the master. All the free officials here are responsible for it." Tian Boyuan was a little brave and immediately made a decision. While rushing down the wall with Sun Tu, he had already ordered his personal guards to come with him to take people.

Seeing this, Sun Tuluo showed some reward in his eyes. It is said that the border army is much stronger than the army in other parts of the Song Dynasty. He might have been a little suspicious before, but now he believes it. Just from Tian Boyuan alone, it can be seen that their confidence is indeed much stronger than the generals elsewhere, at least they still dare to fight against those noble civil officials.

￥￥￥￥￥￥￥

Hundreds of miles away, the Song army camp.

Two or three hundred thousand people spread out, it was really a complete sky, boundless and unobstructed. Even the bonfires at that night were enough to reflect the stars in the sky.

Unlike the slackness of the soldiers patrolling the night in Yanmen Pass, the soldiers and horses in the patrol here are constantly coming and going, and they will never miss a gap. Only when people report tonight's orders and display their waist signs can they pass through the layers of defense and after changing the commands many times, they can get to the largest military tent located in the middle of the barracks.

Qin Gan, who was solid and smart, hurried to the tent, looked at the lights that were still coming out of the tent, and immediately whispered: "I will report to Tongshuai if you have something to do." There is a team of guards of about a hundred people guarding him in front of the tent. If the people inside are not allowed to allow anyone to approach, he will definitely kill him.

Tong Guan's slightly hoarse voice soon came from inside: "It's Zizhong here, come in and talk." With this sound, the two guards in front of the tent took a step back and made a gesture to Qin Gan. One of them even helped him lift the curtains, so that he could enter without bent down and act.

Qin Gan nodded slightly at them, and then stepped into the warm central army tent. Tong Guan was looking at a military newspaper at this time, and he didn't dare to disturb him in a hurry, so he could only stand still. After a while, he saw the other party put down the Chinese book and glanced up: "How is it, but has the matter behind the scenes been finished?"

The army's rations were in trouble. Even though the people sent by Yanmen Pass were as deep as the sea, the front line had already realized something, and Tong Guan had already taken the people to investigate and deal with it carefully. The person in charge of this matter was Qin Gan, who came late at night.
Chapter completed!