In fact, Sun Tu's duties were not only to train the Hu Ben Army, but to find and capture the Liao spies hiding in the city of Bianjing. However, the investigation of the two cases of Zhou Tong's death and Zhou Xiong's murder had nothing to do with him, and everything could only be done secretly.

But in fact, what Sun Tu really cared about now turned out to find out the truth about his master's murder. As for the spies in the Liao Kingdom, he had arrangements, but it was not too tight. He only sent a few brothers from the former Shandong Army scout camp to stare at the Bow and Crossbow Courtyard to see if he could find some clues from it.

Because according to his previous judgment, those crossbows should have flown out of the crossbow courtyard. After all, there are only two aspects of weapons such as crossbows in Tokyo, either the imperial guards or the crossbow courtyard. The imperial guards’ crossbows are engraved with numbers, but those searched crossbows have no relevant marks, so they can only come out of the crossbow courtyard.

But before Sun Tu had time to investigate the situation in the crossbow courtyard, his right to investigate the case was deprived. Of course, even if he had the right to continue investigating the case, it would be difficult to catch people and search in the crossbow courtyard like other officials, because the status there was too special and it was not something that ordinary officials could enter.

To make a similar analogy, the Bow and Crossbow Academy is equivalent to a scientific research department specializing in weapons of mass destruction thousands of years later. There are too many weapons and related documents related to the security of the entire national. The details of any crossbow are leaked, which are a great threat to the Song Dynasty's official army. Therefore, only officials and people in the Bow and Crossbow Academy, or those who hold the emperor's special order, can enter it. Others, Cai Jing and Gao Qiu, are difficult to enter.

So even though Sun Tu had doubts about the place, he could only send someone to look outside and find out some strange people. This arrangement finally came to fruition today. In a few days, people really discovered some strange behaviors of the crossbow master named Cheng Fang. For example, after leaving the yamen every day, he did not rush to go home, but would sit in a hotel two streets away from the crossbow courtyard for a while.

For example, although he ordered wine and food there, he almost didn't move when he left, so he obviously didn't really go to drink. Another thing is even more doubtful. Whenever he entered the hotel, a guest would enter and sit at the table not far from him. Although the two of them did not get together, they could obviously communicate in a low voice.

All of this is enough to prove that there is something wrong with this process, and it is likely to be related to the crossbows that fell into the hands of the Liao spies. After confirming this, these veteran scouts quickly returned to the Imperial City Office and reported the doubts to Sun Tu.

After Sun Tu understood the situation, his face became solemn again: "It seems that those Liao spies are really as I thought, not willing to leave empty-handed, and are still trying to get the crossbow again. Can they follow their residence?" He believed that with the acumen of these subordinates, it was naturally impossible not to follow the other party.

But the result made him a little disappointed: "Return to the general, although we followed, those guys were too cautious and cunning, and they were thrown away by tricks every time." As he said that, the soldier who came to report was still a little ashamed.

Sun Tu didn't mean to blame him, and comforted him: "It's no wonder you. After all, since the other party can be sent to Tokyo to do such things, they must be good at it. Moreover, when it comes to familiarity with Tokyo City, you can't compare with them who have been rooted here for many years."

"How will the general deal with them? Do you take people directly?" Di Yingyang asked with concern.

"No, taking people without any evidence will only shock the entire plan. Besides, it is 80% sure that Cheng Fang stole the crossbow. What's wrong with him?" Sun Tu thought for a while before he decided to say, "Just be more patient until they really handed over the crossbow and other things out, and it will not be too late to take action. When the people are caught, they will not be afraid that they will not admit it."

Speaking of this, Sun Tu looked at the sun that was gradually moving westward outside and said, "Look at the time, it's almost time to scatter the yamen in the Bow and Crossbow Courtyard? Let's go and see Cheng Fang, and see how he got in touch with others." Since the clues of Zhou Xiong's case were almost broken, he thought to solve the matter here first, so as to adjust his mood.

Di Yingyang was also very interested in this and immediately asked to follow. After Sun Tu nodded, he did not delay and quickly headed straight to the Bow Crossbow Courtyard under the guidance of the scout. After half an hour, he appeared in a two-story restaurant facing the street. The window where he was, he could see most of the lively long street below.

"General, this is his must-pass road every day, and every time he will pick one of the hotels and sit in for half an hour." The scout looked at the end of the long street and explained in a low voice. When Sun Tu nodded, the man said excitedly: "Here you come."

Sun Tu looked down in the direction of his fingers and saw a middle-aged man with an extremely ordinary figure walking slowly. After getting closer, Sun Tu could even see that his face seemed to have a little uneasy and his hand huddled in his sleeves was also a little stiff. This made Sun Tu's eyebrows suddenly raise. Things wouldn't be so coincidental, is there something really hidden in him?

Then, Sun Tu turned his gaze around him and soon found that several people were staring at his every move, but these people were scouts under his command and there was no trace of the spy from the Liao Kingdom as imagined. Could it be that the person had already entered the hotel and was waiting?

Sun Tu thought, and even more energetic, paying attention to the direction of the other party's movement. Then an unexpected scene appeared. The other party turned out to be abnormal and did not enter any of the hotels in this row, but continued to move forward along the street.

"This... General, he would have been in one of the hotels for a while, but why has it changed today..." The subordinate was also a little confused and muttered uneasy.

"Let's talk about other things later, follow him first. Since something goes wrong, there must be a reason." Sun Tu seemed quite calm, quickly stood up, leaving one person to pay the bill, and he led people downstairs quickly, and then stood behind Cheng Fang from a distance.

Fortunately, there were a lot of pedestrians on the street at this time, and the dozen of them in their ranks did not seem too abrupt. Moreover, Cheng Fang was not too alert and had thoughts, so they followed him all the way and didn't even realize anything, just caring about his own way.

But as he bent left and right, it was soon difficult to follow. Because he had already bent into a rather remote alley. If so more than ten people chased him from behind, even a fool would be able to see the problem. The scout frowned even more: "This is not the way to his house, why did he suddenly come to such a remote place?"

"I think too much, I will only know the truth after following me and take a look." Sun Tu said, and waved his hand: "You guys are here, and let a team of people take a detour and watch the other end. Brother Jiu and I follow in and see it clearly."

"General, this is a bit inappropriate. Why don't you go in with the young men?" Someone hurriedly opposed it, but Sun Tu waved his hand and denied it: "What, can you be better than me in terms of skills? Besides, the dress of Jiu Ge and I are the least noticeable."

After he said this, everyone understood. Indeed, Sun Tu and Di Yingyang were dressed in brocade robes, which looked noble, and no one would suspect that they would follow people. However, these scouts were all dressed in short clothes and looked smart. Once they lost the cover of the people on the same road, they would easily reveal flaws.

The situation was urgent, and Sun Tu didn't give them any more time to hesitate. He immediately pulled Di Yingyang, who was a little nervous, and walked in. The latter's face suddenly showed a bitter smile: "Sanlang, don't harm me. To be honest, although I have been in the army for many years, my skills are tight."

"Brother Jiu, don't worry. You are not asking you to take someone, you just follow me and see what this guy is doing. And with me here, I will definitely protect you." As they spoke, the two of them entered the alley. Fortunately, they followed quickly enough that they could follow Cheng Fang and then follow him into a bamboo forest.

At this time, it was quiet here, and there was no one to see a figure. Only the three of them were constantly walking deep into the forest. During this period, the crossbow master seemed to turn around and look at him for a few times, but how could he find Sun Tu? After a few glances, it was just a waste of time.

It was not until he came to a big bamboo that was as thick as a waist, that he stopped, and then bent down and worked for a while, as if he was burying something. After a while, he finished the work, and then he hurriedly turned around and walked back quickly as if he was relieved.

Sun Tu and the others had already avoided the darkness on the other side, so naturally he did not notice it. After he walked away, Sun Tu was no longer busy following him, but quickly walked towards the big bamboo. If he was 80% sure before, then now he could be sure that this person was the culprit of the crossbow leak. He must have buried something important here. And just by looking at how familiar he has been along the way, it is obvious that he has done this one time or two times!

Although the sky was completely dark, it could not affect Sun Tu's eyesight. When he got closer, he had already noticed the stones deliberately made a variety of tricks on the ground at a glance. He immediately remembered them in his heart, took them away, pulled them away with bare hands, and soon, he dug a shallow pit in the mud, revealing a box hidden inside.
Chapter completed!