Returning to the National Security Bureau, Chu Tianci looked at the man with glasses in front of him, with some bitterness in his mouth, indeed, he should be ashamed at this time, because according to his own plan, there was no gain, but he wasted part of the manpower on Yang Jianchun's body, and what was even more unfortunate was that the failure of this operation made Chu Tianci difficult to hide the guilt in his heart.

"Okay, this matter has nothing to do with you, but there is one thing that I am very strange, who is this mysterious person that Yang Zhen just saw?" The man with glasses comforted Chu Tianci.

In fact, the man with glasses suspected not only these, but also one thing, he also felt a little strange, it seemed that Yang Zhengang fully understood the actions of the police, and secretly left that place at the moment before the police carried out the arrest, as if he deliberately performed for the police, but the man with glasses did not have any evidence to prove this, so he did not express his suspicions.

The main reason why Chu Tianci and Du Yu were recalled was that he wanted to ask if there was anything abnormal in Yang Jianchun, although Du Yu had reported everything that happened to Yang Jianchun before, but the man with glasses still felt that there was something wrong with this Yang Jianchun, but it was just like arresting Yang Zhengang, without any harvest and evidence, but he didn't want to, his actions made Chu Tianci fall into self-blame, to tell the truth, the man with glasses really didn't mean to blame Chu Tianci.

"You carefully recall and recall, has Yang Jianchun behaved strangely in the past few days, and," While speaking, the man with glasses took out a somewhat blurry photo and put it in front of the two, and then continued: "Also, take a look, has this person ever appeared by Yang Jianchun's side?"

The photo is very blurry, and even slightly ghosted, it is obvious that this was taken with a mobile phone, and the situation at that time may be that the police officer who found Yang Zhengang hurriedly filmed the other party, because of the angle, so only Yang Zhengang's appearance can be seen clearly in the photo, as for the other person, only a back is left.

Du Yu took a brief look and didn't see anything abnormal, not to mention this mysterious person, it was Yang Zhengang, Du Yu was not particularly familiar, and it was only in some internal materials that he had only seen Yang Zhengang's photos, so naturally there was no special discovery.

It's just that when the photo came to Chu Tianci's hands, Chu Tianci looked at the back in the photo, but was shocked and stood up directly from his seat, Chu Tianci's actions naturally made the glasses man and Du Yu find out, after the two saw Chu Tianci's abnormality, they didn't bother Chu Tianci to identify, but just silently waited for Chu Tianci to finally say something.

After careful identification again, Chu Tianci finally spoke, "This mysterious person, this mysterious person seems to be a person?"

"Who is it?"

"No, it's not anyone, it's this person who seems to have appeared, and all the images left behind seem to be just the back, no one knows his true face, so who exactly this person is, I think no one knows, the clearest image may be an image left in Shanhai City Prison, and there was once a prison guard there, who should have seen this person's appearance, but for some reason, no matter what, this person is unwilling to say this, so this person is still a mystery to us。 ”

After listening to Chu Tianci's introduction, the glasses man naturally couldn't sit still, and directly began to look for those materials from a few months ago, and with his own identity, he began to investigate several prisoners at that time, the purpose was naturally to find the true identity of this mysterious person, the glasses man believed that as long as someone saw the face of this mysterious person, he would definitely be able to find out this mysterious person.

Soon, the original image came back from the province, and the man with glasses took the blurred photo and began to compare it with that image, and soon, he came to the same conclusion as Chu Tianci, this mysterious person who met Yang Zhengang was the person who replaced Li Si in prison at the beginning, but after Li Si's incident, the mysterious person disappeared completely, no one knew where this person went, and because there was no video data, it was not wanted, so this matter became an unsolved case, but I didn't want to, at this moment the mysterious person appeared again。

After confirming that the person Yang Zhengang saw was the person who appeared in the prison and temporarily replaced Li Si, the glasses man set off towards the prison with a few people, obviously preparing to find a few prison guards at that time, intending to learn everything about this mysterious person from the mouth of these prison guards, at the beginning, maybe for some reason, these prison guards did not confess the mysterious person, but a few months have passed, even if there is more love at the beginning, I am afraid that this time has been exhausted, after all, one of them has been at large, and these prison guards can only suffer in prison, it is inevitable that there will be some other thoughts in their hearts, so the man with glasses felt that this should be a good time to make a breakthrough, so he went to the prison with confidence.

Chu Tianci and Du Yu didn't go there, although they didn't say it explicitly, but the meaning of the glasses man was obviously to let Du Yu continue to secretly observe Yang Jianchun's every move, as for Chu Tianci, after all, he was not subordinate to the National Security Bureau, and the glasses man naturally had no right to give any orders to Chu Tianci, but Chu Tianci naturally didn't want to quit like this, and Du Yu was really inconvenient to perform the task alone, so he planned to work with Du Yu to continue to monitor Yang Jianchun's every move, but this time, Chu Tianci no longer planned to monitor it openly, because Chu Tianci believed that in front of himself and Du Yu, Yang Jianchun will not do anything that makes people suspicious, and if he wants Yang Jianchun to make a mistake, he can only let him go completely.

Through the contact in the past few days, Chu Tianci and Du Yu found that Yang Jianchun's life is actually very simple, every day is just a police station, his own home and a small restaurant, three points and one line of life, as long as there is no special task, this is Yang Jianchun's life that can not be moved, because they know Yang Jianchun's line of action, so Chu Tianci and Du Yu feel that they should perhaps change the previous tracking methods and try to use more covert methods to monitor Yang Jianchun.

Chu Tianci knew that with Du Yu's ability, it was not enough to keep up with the other party without Yang Jianchun noticing, but Chu Tianci was also not good, because Yang Jianchun knew himself too well, although he preferred to hide in some particularly inconspicuous corners when he was tracking, but Yang Jianchun was easier to find himself, so when facing the previous Yang Jianchun, the previous tracking method also needed to be completely eliminated.

Of course, for tracking, the most important thing is that the person who is tracking can be witty enough not to be discovered by the other party when tracking, but now this method can't be used, so Chu Tianci decided to wait for the rabbit, and this method can only be used on people like Yang Jianchun who live a simple life, because Yang Jianchun's daily life is very regular, so, as long as some cameras are installed in the designated place, Yang Jianchun's whereabouts must be discovered, and because it is a public place, Yang Jianchun will never find out, these cameras are specially to detect him。

Yang Jianchun not only has a daily life rule, but also a certain daily action route, so Chu Tianci and Du Yu's installation of cameras is much simpler, in just one day, Chu Tianci installed some cameras on some of Yang Jianchun's necessary roads, and when installing these cameras, he still took the relationship of the National Security Bureau, otherwise, it is really not easy to carry out construction in these places.

After the installation was completed, Chu Tianci and Du Yu came to a room and waited, at this moment in front of the two, there are two monitors, one of which is the only camera video, as for the other monitor, it is all the sub-video of all the installed cameras, as long as one of them is selected, then on the other monitor, this video will be displayed immediately, and what is displayed on the monitor at this moment is the scenery outside the police station building.

Looking at the monitor in front of him, Chu Tianci still felt a little emotion in his heart, after all, he could install the surveillance camera outside the police station building, which ordinary people really couldn't do, and at the same time, those people who worked in the police station building every day, if they knew that someone was monitoring their every move at the moment, they didn't know what kind of thoughts they would have, shook their heads, Chu Tianci threw these messy thoughts out of his mind, and then waited patiently.

Finally, the time came to six o'clock in the evening, and after waiting for ten minutes, Yang Jianchun appeared at the door on time, and after glancing left and right, Yang Jianchun walked towards his car.

The speed of the car on the highway is not particularly fast, so Chu Tianci and Du Yu don't need to switch cameras frequently, Yang Jianchun's daily driving speed seems to be exactly the same, at half past six, Yang Jianchun finally came to a small restaurant that must be visited every day, and Yang Jianchun's car will also be parked in a nearby parking lot, after solving his dinner in the small restaurant, Yang Jianchun walked home.

After staying in the small restaurant for half an hour, Yang Jianchun walked out of the small restaurant, and at this time, Du Yu also clicked the mouse and switched the video on the monitor to another camera, but at the moment of switching, Chu Tianci suddenly found a somewhat familiar figure, but when Chu Tianci changed the camera back, the figure had completely disappeared.