Xu Ziqing has been dead for half a year, and the police have condemned her case as suicide, but for Tang Yuran, this is an unacceptable result for her, and it is because of this that there is a follow-up investigation.

According to the existing clues, Wei Zhongwen, together with the police, has successfully traced the boyfriend of the deceased Xu Ziqing, Qin Kai.

In order to grasp more useful clues, Wei Zhongwen and his party did not want to startle the snake, but chose to monitor.

Counting up, the surveillance of Qin Kai has been going on for a week, and judging from the existing monitoring results, Qin Kai's behavior pattern is very regular.

Internet cafes, homes, restaurants, three points and one line. Other than that, Qin Kai didn't seem to have been anywhere else.

In a small warehouse just across the street from the Internet café, Wei Zhongwen was closely observing Qin Kai's every move, and with the help of the high-definition camera, the other party's every move was all in the eyes.

A week has passed, Qin Kai has no special actions, and the most he does every day is to surf the Internet. Qin Kai patronizes the Internet café every day, as long as he comes, he stays all day, and it is common to stay until five or six o'clock in the morning.

If he is hungry during the period, Qin Kai will directly order a boxed lunch or order a takeaway at the Internet café. After getting on the Internet, Qin Kai will go back to the rental house to sleep and no longer go anywhere else.

It can be said that Qin Kai's whereabouts can be easily grasped.

But mastering does not mean being useful, after a week, Wei Zhongwen did not get some useful clues, on the contrary, as time passed, he became a little impatient. If we continue to observe, it may be just a replication of behavioral patterns, and we will not get more clues.

Thinking of this, Wei Zhongwen's heart began to become restless, if the investigation had been fruitless, he naturally understood what it meant.

Wei Zhongwen thought about the surveillance for a week, and always felt that there should be something wrong, which would lead to nothing being discovered, thinking of this, Wei Zhongwen forced himself to cheer up again, at this time, he is the most undiscouraged, once he is discouraged, it is very likely that his efforts will be lost.

"Chen Xi, didn't you find out that Qin Kai had a fake ID card before?" Wei Zhongwen looked at Chen Xi on the side and asked.

"That's right, we found out by accident, Qin Kai's fake identity uses the name 'Qin Hua', what's the problem, captain?"

"I want to know this person's bank statement." Wei Zhongwen asked directly.

"We have checked this, and the bank flow of this account is extremely frequent, almost every day, and someone will send money to this account every day."

"Every day?" Wei Zhongwen asked suspiciously.

"That's right, and we've checked the senders, and their account information comes from all over the country, and there doesn't seem to be any connection between the senders."

"Are you sure that the bank card is in Qin Kai's hands?" Wei Zhongwen asked.

"When we investigated before, we monitored that Qin Kai had gone to the bank to withdraw money, and through the contact with the bank, we got the information of 'Qin Hua'. Therefore, it was preliminarily judged that the bank card was in Qin Kai's hand. But if you want to confirm it further, you can only wait until Qin Kai withdraws money next time. ”

"Understood, always observed, only when there is a chance, you must ensure the accuracy of the information."

"Understood, Captain." Chen Xi nodded and agreed seriously.

"Judging from the current situation, if the holder of this bank card is Qin Kai, judging from Qin Kai's daily activities, how did he get such a sum of income?" Wei Zhongwen couldn't help but ask.

"This week, the most Qin Kai does every day is to go to the Internet café to surf the Internet, is Qin Kai making money through the Internet?" Chen Xi asked suspiciously.

"But judging from our records, Qin Kai's daily online content is nothing more than playing games, shopping for post bars, or chatting with people." Wei Zhongwen said, but it was as if he suddenly remembered something. "Wait... Chat? ”

"Captain, is there something wrong?" Seeing Wei Zhongwen's solemn face, Chen Xi asked nervously.

"Generally speaking, most men come to Internet cafes to play games, and of course, there are a few people who like to chat and watch videos. However, Qin Kai's daily time chatting on the Internet almost occupies more than half of his online time, such a large proportion is a bit abnormal. ”

"Captain, you mean that the other party is making some kind of transaction through online chat, and thus get a profit?" Chen Xi boldly guessed.

"There is this possibility, if this is the case, it can explain why Qin Kai can have a steady stream of income without leaving home."

"However, judging from Qin Kai's flow, each transaction is not a small amount, what kind of transaction can have such a high income."

"This may be our breakthrough." Wei Zhongwen said, his eyes were very serious, as if he was trying to think about the possibility. "Haven't we already installed a high-definition camera, can we take a screenshot of the chat on the computer screen and see what's in it?"

"The installation is installed, but the effect is not ideal, Qin Kai's display screen is specially processed, even if we shoot with a high-definition camera, we can only see a relatively blurry picture, if you want to see the text on it clearly, I'm afraid you still need to overcome it technically." Chen Xi replied.

"In other words, Qin Kai had long expected that someone might spy on him." Wei Zhongwen said: "If that's the case, you can only wait until Wei Zhongwen gets off the plane to check his chat history." Get a couple of technicians over and ask them to resume the chat anyway. ”

"I understand the captain, but I'm afraid it will take a certain amount of time, Qin Kai will clean up the traces of the Internet every day after getting off the plane, and I have consulted the technical staff, his methods are very professional, not like ordinary users will use."

"Professionals?" Wei Zhongwen repeated these four words in a low voice, and this title made him think of someone at once. "Feng Ming!"

"Captain, what do you mean—" Chen Xi didn't continue, but she already understood.

At the beginning, Wei Zhongwen had guessed that the three cases were related to each other, but even so, he had never found the connection between the three, if it was really Feng Ming who was behind the scenes to help Qin Kai delete the Internet data, then there would be two cases that could be linked.

When Wei Zhongwen thought of this, he seemed to see hope. If things are really as speculated, then maybe there will be more clues to the case.

"If it was really Feng Ming who taught him the method of clearing the traces of the tour behind Qin Kai's back, it would be enough to explain the relationship between the two of them." Chen Xi continued Wei Zhongwen's words.

"Maybe we can start from this point to further explore the relationship between these two people." Wei Zhongwen said.

"So how do you do that?"

"If there is a connection between the two of them, then they will definitely have a chat. Therefore, if you can find the corresponding chat history and locate the other party of the chat, it is not difficult to find out who the chat object is. But..."Wei Zhongwen said, as if he remembered something, and his words revealed uncertainty.

"But what?" Chen Xi asked rhetorically.

"However, since Feng Ming has the ability to erase the traces of the tour and the content of the conversation, I am afraid that this kind of crucial evidence has long been destroyed."

"Moreover, we can't be sure which machine Qin Kai is communicating with Feng Ming on."

"Then check the monitoring first, see which machines Qin Kai has used in the past few months, check each machine one by one, and then communicate with colleagues in the technical department to see if our ideas can be realized. To make it easier for them to filter, I guess there are a few keywords that can be targeted. ”

"I still don't understand too much..."Chen Xi said embarrassedly.

You can understand it this way. According to our guess, it was Feng Ming who taught Qin Kai how to clear the traces of the Internet, so during the conversation between the two of them, they will definitely involve relevant terms, and these terms will be our breakthrough. However, there is also such a possibility, Feng Ming knows that someone will use this to conduct a search in the future, so he may also use some variations of terms to communicate. ”

"If that's the case, then the investigation will be more difficult." Chen Xi couldn't help but feel a little embarrassed.

"That's right, and make it clear to my colleagues in the technical department that this kind of thing must not leave a trace, once it is detected by the other party, it will startle the snake." Wei Zhongwen asked.

"Okay captain, I see." Chen Xi nodded seriously.

"However, as I said before, Feng Ming will definitely pay special attention to this kind of critical evidence and destroy this data as much as possible, so it is not very likely that we want to find useful evidence from it." Wei Zhongwen said while analyzing the possibilities.

"And... I'm afraid it will take a lot of time. Considering that the Internet café is an open environment, it is difficult to guarantee that there will be no Qin Kai's eyeliner in the Internet café, if we wait until Qin Kai gets off the plane to do it, and at this time Qin Kai leaves his accomplice by his side to help take care of his computer, then it will expose us all at once. ”

"Yes, that's a problem, too." Hearing Chen Xi's words, Wei Zhongwen suddenly fell silent. The possibility that Chen Xi said is not impossible, so it is very likely to startle the snake by doing it directly on the computer.

Seeing that Wei Zhongwen fell into deep thought, Chen Xi couldn't speak, and for a while, the entire monitoring room was extremely quiet, so quiet that you could hear everyone's breathing.

"If the previous record has been deleted, what about the current one?" Wei Zhongwen seemed to have thought of something and muttered to himself.

"What did you say, Captain?" Seeing Wei Zhongwen's reaction, Chen Xi knew a rough idea in his heart, and Wei Zhongwen at this time should already have a new idea.