Everyone in the serious crime team stood behind He Xingchen, staring intently at the computer screen, and they didn't dare to come out.

He Xingchen dragged and dropped the data in the mailbox into the system.

This system was established ten years ago, and the DNA of people who have had criminal records in the whole country is in this system.

The green barcode searches and scrolls through the system, and the time passes by minute by minute.

The expressions of the crowd gradually became serious.

"Is it going to take that long?" Zhou Li glanced at her watch and muttered quietly, "I remember that I used to be in the database, and I could find it out at once......"

Xu Sa frowned and did not speak.

"Ding Dong" sounded, everyone's spirits were lifted, and a line of red English letters appeared on the computer screen.

"Team Xu......" He Xingchen was stunned, "This DNA can't be found in the system......"

"How is that possible!" Li Hua frowned, "Senior Brother Xiaohe, is there something wrong with your system?" Or are you looking for the wrong system? ”

"Absolutely not!" He Xingchen turned back solemnly, "There is only this one in the national system." ”

"Then, if you can't find it, what does it mean?" Chen Hui opened his mouth, and he couldn't react for a while, "You mean, doesn't this person exist?" ”

If it didn't exist, how could the other party's skin tissue appear in Wang Jian's nails?

He was blinded.

"It's just a possibility." Su Tong looked at the computer screen for a long time before speaking, "Have you forgotten?" This system only registers people with criminal records. ”

"If you can't find it in this system, it means that the person who attacked Wang Jian is clean." Xu Sa continued her words.

Everyone was silent, looking at each other.

Of the country's more than one billion people, only a part of them have a criminal record, and there are countless people who do not.

They now only have one DNA in their hands, and how difficult it is to find one of the people who have no criminal record.

It's a very difficult thing to do.

"In other words, this clue is useless if you have it." Zhou Li hesitated.

They now have a card in their hand that they can't play at all.

"Not necessarily." Su Tong looked at the information that was still scrolling on the screen, "Do you imagine who attacked Wang Jian?" ”

"If it weren't for Jiang Li's case before, we would definitely think it was a burglary or something." Li Hua touched his chin and tried to analyze, "But now that Jiang Li's case is in front, maybe the real murderer of Jiang Li's case?" ”

"No, judging from our current clues, all the clues point to Wang Jian!" Zhou Li waited for Li Hua to take a look.

After discussing for a long time, everyone found that this case was like an endless loop, and no matter how they analyzed it, they would return to the original point.

Xu Sa sighed helplessly, pulled Su Tong aside, and asked in a low voice, "What did you want to say just now?" ”

"You didn't expect that?" Su Tong raised his eyebrows at Xu Sa, and looked at him with a smile, "I thought you would notice this before me." ”

After all, Xu Sa is an expert in investigating the case, and she is an assistant.

Xu Sa, "......"

"Okay, I'm not going to tease you." Su Tong put away the smile on his face and said seriously, "The reason why I didn't say this method just now is because I think this method is a bit risky. ”

"In the hospital, judging from Wang Jian's attitude, the person who attacked him should be someone close to him, and even the other party usually has a good relationship with Wang Jian, so Wang Jian will hide it and not open his mouth."

Now that they have DNA, it's a shame not to use it, so it's better to take the risk.

"As long as we do enough to conceal it, we can list the people around Wang Jian who may have committed the crime during that time period."

"Then, we went and took their DNA and compared it."

After speaking, Su Tong stared at Xu Sa.

This is very risky, because it involves illegally harvesting their DNA, and if the person who attacked Wang Jian is not found in the end, and then the matter is revealed, Xu Sa will definitely be punished.

"Let me think about it." Xu Sa frowned, he was not afraid of being punished, but he was thinking, maybe there was a better way than this.

"Well, we still have time, this method is a good idea, and I don't approve of using it unless it is absolutely necessary." Su Tong nodded.

Li Hua, Zhou Li and others are still discussing the direction of the investigation later.

He Xingchen, who had been sitting in front of the computer, turned his head faintly, glanced in the direction of Xu Sa, and whispered, "Team Xu...... I have a way to ......"

Xu Sa raised his eyebrows, and wanted to laugh when he looked at He Xingchen's shrinking head, "What can you do?" ”

He Xingchen cautiously glanced at the direction of the office door, and made sure that there was no eavesdropping outside the door before he spoke reassuringly, "Actually, I participated in a project when I was in the Ministry of Information before. ”

"That project has been in the process of being formed since three years ago, and although it is not yet perfect, I think it may be able to help us this time."

Three years ago, the city bureau began to set up the city's population information system.

Compared with traditional information systems, this system has one more piece of DNA information.

The main purpose is to facilitate population management in the future.

However, due to the use of data, the system has not been officially released to the public, and only part of the information has been collected.

"I think that if the person who attacked Wang Jian happened to be from this city, maybe he would have been included in the system in the past three years."

Speaking of this, He Xingchen saw that everyone was staring at him with wide eyes, and pushed the black-rimmed glasses on the bridge of his nose with some embarrassment, "So, Team Xu, why don't you give this system a try?" ”

Xu Sa gasped, stepped forward and patted He Xingchen's shoulder very solemnly, "I suddenly feel that it was too wise to poach you from the Ministry of Information in the first place!" ”

He Xingchen scratched the back of his head embarrassedly.

"Yes, Senior Brother Xiao He, this time I have made meritorious service again!"

"Knowledge changes fate, it seems that I will have to learn a specialty in the future. Otherwise, you may not be able to get along in the serious crime team. ”

"Xingchen, since that system has not been officially put into use, how can we get the DNA into it for comparison?" Su Tong raised a very critical question.

After listening to He Xingchen's words, they all only knew that there was this system, but no one knew where to find it or how to use it!

"This ......" He Xingchen pursed his lips, and his voice became quieter, "I can enter the system, but this project is a highly confidential project, so only one person has the right to use it." ”

"If we need to use it, we need the permission of the other party."