At this time, Wei Zhongwen was in deep thought, Chen Xi on the side just waited quietly, not daring to disturb loudly, she knew that Wei Zhongwen must have a new idea.

The waiting process is always long, and time passes minute by minute, but in the monitoring room, everyone does not dare to speak out, for fear of interrupting Wei Zhongwen's train of thought.

At this time, Wei Zhongwen hesitated for a moment, but still opened his mouth and said: "All along, our idea has been to intercept Qin Kai's information after he gets off the plane. But now I find that this method does not work, Qin Kai will clean up the data every day after getting off the machine, if you want to get the deleted information, you have to start from the hard disk, in this way, we must have direct contact with the computer. ”

"That's right, that's what my colleagues in the technical department told me before. If you want to recover the data that has been deleted, you must do it to the computer, but once we get started directly with the computer, it is difficult to ensure that it will not be discovered by Qin Kai. Chen Xi continued Wei Zhongwen's words.

"So, we need to change our thinking." Wei Zhongwen raised his head, and the corners of his mouth couldn't help but smile.

"Changing your mind?"

"That's right, in addition to starting from the previous data, we can also have another way to determine whether there is a connection between Qin Kai and Feng Ming."

"Captain, how do you do it?"

"How is Feng Ming's surveillance over there?" As soon as the topic changed, Wei Zhongwen asked Feng Ming's side.

"It's going well, there has been nothing abnormal on Feng Ming's side for the past week. We took control of Feng Ming's computer, but we didn't find anything out of the ordinary. ”

"Feng Ming is a smart man, he must understand that the police will do something to him, so he will definitely not leave us a handle, but we don't want that."

"What's that?" Chen Xi was a little dizzy, she couldn't figure out what Wei Zhongwen wanted to do.

"Save all the previous chats of Feng Ming, and you will use them in the future." Wei Zhongwen said directly.

"The chat... I understood, and I said hello to my colleague over there. As for the content... Is it okay to do anything? Chen Xi asked uncertainly.

"That's right, anything, just a little more." Wei Zhongwen responded.

"Okay." Chen Xi nodded, and then asked, "What about Qin Kai's side?" ”

"Qin Kai's side, discuss with my colleagues in the technical department to see if we can directly hack into his personal computer to obtain data, if we wait until he deletes the information every time before we act, I'm afraid it will be a little passive." Wei Zhongwen said.

"This may work, Qin Kai is not a professional after all, so even if we invade, it will not be so easy to be discovered, and we can get more information from it, and if it goes well, we can track down the location of the chat partner at the same time."

"Maybe, we can investigate together, but their anti-reconnaissance capabilities are so strong, I'm afraid it won't go so well, but even so, it's still worth a try." Wei Zhongwen said, he couldn't help but pause, as if he was sorting out his thoughts, and then said: "Qin Kai, here, try to collect all the data that can be collected, but the priority is still his chat history. Qin Kai spends a lot of time on this every day, it must have his intentions. So judging from the current situation, Qin Kai's chat records are more significant for research. ”

"I understand the captain, but if you just collect the chat records, how can you judge the relationship between Qin Kai and Feng Ming?"

The previous idea was to find out whether they were related by looking up the IP locations of the two, but since this road was out of nowhere, Chen Xi couldn't think of any better way for a while.

"How to see the connection between these two people, you have to find an expert to help." Wei Zhongwen said, and couldn't help but smile.

"Which expert?" Chen Xi asked puzzled.

Tang Yuran, a researcher at the Institute of Linguistics, is a researcher at the Institute of Linguistics, and her research project is to extract features from textual information, and then analyze and study it. Wei Zhongwen explained.

"In other words, as long as enough text information can be collected, it can be handed over to Tang Yuran for analysis, right?" Chen Xi asked as if he didn't understand.

"That's right, in this way, the text characteristics of the two people can be matched, even if Feng Ming and Qin Kai are anonymous when chatting, but the style of the language is inherent, so as long as the match is high enough, it is enough for us to judge the relationship between these two people."

"I didn't expect it to work." When Chen Xi heard this, she was a little surprised, she had never thought that she could use language to help solve the case.

"Well, when we chatted before, I once heard Tang Yuran mention her work, I just don't know how to pretend to understand, I probably understand the principle, how to do it, I still have to ask her to explain." Wei Zhongwen said unabashedly.

"Okay, as long as you can assist in the investigation of the case, it is necessary to try any method." Chen Xi replied approvingly.

"Okay, as long as you think it's okay, I'll call Tang Yuran and ask her to come over, as for what needs to be done, I have to ask her to tell us about it." Wei Zhongwen said.

"No problem." Chen Xi responded frankly that as long as it can help solve the case, nothing is a problem. Just using text information to solve the case, Chen Xi heard it for the first time, whether this method can work or not, she can't help but draw a big question mark in her heart.

Just as Chen Xi was thinking, Wei Zhongwen's phone call had already been completed.

"Just over the phone, Tang Yuran said that she happened to be coming over and would be there soon." Wei Zhongwen said.

"Okay, then wait a minute."

"Well, if it really goes as smoothly as expected, it won't be in vain for a week of surveillance." Wei Zhongwen couldn't help but sigh and said.

"Captain, in fact, I still don't quite understand Qin Kai's source of income, I can't figure it out, how can someone get so much income just by chatting, but judging from this week, I haven't seen him have any commodity transactions, if there is no trading, how can there be money?" Chen Xi expressed the doubts that had been bothering her for a long time.

"Well, your concerns are justified, the reason why Qin Kai is so vigilant, every time he gets off the plane, he clears the traces of the tour in time, and at the same time carries out special treatment on the display screen of the screen, these behaviors are enough to show that he is not just simply surfing the Internet in this Internet café. What he does is very secret, and he doesn't want to be noticed. The more this is the case, the more necessary it is to investigate further. ”

"If that's the case, I'm afraid it will be a little difficult for us to directly intercept his traces of the Internet." Chen Xi seemed to think of something and couldn't help but say.

"That's right, so this point, we must make it clear to our colleagues in the technical department, the most basic point is not to startle the snake, although Qin Kai is not a professional, but he must also have some necessary anti-reconnaissance means, when investigating, you can test him first to test his professionalism. If you attack on this basis, you will be more confident. ”

"I see, I'll make it clear to them, let them try the water first." After hearing this, Chen Xi nodded in agreement.

"That's right, that's the truth. I can only provide them with ideas, and how to do it, I still need you to confirm the plan with them. Wei Zhongwen responded.

"Okay captain."

"So, if you want to do the next step of text research, this step of data acquisition is quite critical, and if you don't have enough data, no amount of research will help."

"It's like a good woman can't cook without rice." Listening to Wei Zhongwen's words, Chen Xi couldn't help but sigh with emotion.

"Haha, that's probably how it feels." Chen Xi's analogy made Wei Zhongwen laugh out loud.

While the two were talking, there was a knock at the door.

"Who is it?" Chen Xi suddenly became aware and asked his colleagues in charge of monitoring, who had already installed hidden cameras at the door in advance.

"It's Tang Yuran." The other party responded.

"No one else, right?" Chen Xi asked uneasily.

"It's been observed, no one is tracking."

"Okay, open the door for her." Chen Xi breathed a sigh of relief and responded.

"Okay."

In the next second, the door opened. Tang Yuran entered the house alone.

"Sorry to interrupt." Tang Yuran just came in and said so.

"No, we need your help." Wei Zhongwen responded before others.

"Well, I don't know if there's anything I can do." Tang Yuran said naturally.

"That's right, Miss Tang, I just heard a brief introduction to your work from Team Wei, and in this case, you can help us, so I asked you to help." Chen Xi opened his mouth and said.

"No problem, as long as I can, I'll do it." Tang Yuran did not shirk and responded frankly.

"Thank you for your cooperation, but before that, I want to know more about your work, I don't know if it's convenient to introduce it." Chen Xi said.

"It's okay to introduce, but some of the content involves confidentiality issues, and it's not convenient to disclose, I don't know what you need me to do, you might as well say it directly, to see if this matter is within my ability, so that I won't violate the confidentiality regulations because I say too much." Tang Yuran said sincerely.

"It's okay, anyway, you are the client of the case, and you also have the right to know, so I'll tell you briefly."

"Okay."

"After a week of investigation, we found that Qin Kai has a strong sense of anti-reconnaissance, and every time he gets off the plane, he will clean up all traces of the Internet, so we can't start from this aspect to get useful clues, and there is no way to track down who the people who contacted him are."

"I didn't expect it to be so difficult..."After listening to Chen Xi's words, Tang Yuran also realized that it was not easy. I heard Ziqing say before that he was just an unemployed vagrant, but I didn't expect him to understand this technology. ”

"Yes, it was really unexpected. Therefore, we suspect that behind him, there are actually masters to help. Chen Xi replied.

"Master... Who will it be? ”