Mystery Tracker 2

After a short meeting in the shopping mall, Cheng Chen paid more attention to this year's cheating case of extra points in the college entrance examination.Just like what Shen Yan said, this matter is very important both public and private, and it is worth investigating.Moreover, with Chen Dong's ability and Li Guangbei's means of connections, it may not be known whether this incident will become another major case that caused a sensation in the whole province.However, the attention of the two did not last long, because the police station is always a place where there is no shortage of work, and there are all kinds of cases to fill your time-but this time is a little different, because this This time, it was Cheng Jinsong's forensic team who "looked for trouble".

The thing is like this, in March and April of this year, the forensic team made a small fortune—the forensic team had made outstanding contributions in several major cases before, and won the third-class collective merit. At that time, Cheng Jinsong Ask the leader to allocate funds for the purchase of inspection equipment.Although Wang Ju scolded Cheng Jinsong back at that time with a sentence of "climbing up smoothly", he also knew that Cheng Jinsong was also for work, so he worked hard to help the forensic team obtain 20 yuan in equipment funds.It's just that this number is really not too much—especially when compared with foreign advanced equipment.However, at this time, the bureau suddenly received a social donation of 100 million from a person they all knew—Li Guangbei's father, Li Xingguo.

Shen Yan and Cheng Jinsong were very surprised when they heard that Li Xingguo had donated money to the forensic team.Because they didn't have much contact with Li Xingguo before, that is, they met the old man twice in Feng Jianmin's case before (and the trouble was not pleasant both times).Moreover, as Li Guangbei's father, Shen Yan didn't have a good impression of Li Xingguo, so he would donate money to the forensic team, and Shen Yan subconsciously felt that the old man had a conspiracy.However, Li Xingguo's explanation is very simple: this is thanks to the S City Public Security Bureau for helping to solve the case of her son-in-law.

When hearing this sentence, Shen Yan couldn't help but sneer: "The Li family actually know how to thank them? It's really strange!"

Shen Yan and Li Guangbei were naturally at odds, and Cheng Jinsong knew that they hated each other.So I didn't take Shen Yan's angry words seriously.He said objectively: "In fact, I think that although people like Li Xingguo and Li Guangbei are not good people, they are not heinous villains. At least like you said, they don't sell drugs, and they don't openly confront the police." .And I think Mr. Li’s love for the girl at the beginning is that he can do anything for his daughter.” Seeing that Shen Yan seemed to be about to speak, Cheng Jinsong went on to say: “But even if the old man really wants to donate, it’s not always possible in the bureau. Dare to ask, after all their father and son identities are too sensitive. If you don't believe me, just wait and see!"

What happened afterwards was as Cheng Jinsong expected, and the Bureau treated the money very cautiously. After all, Li Xingguo's status was too special.Whether the money is accepted or not, it needs to be handled with care.For this reason, the Bureau Wang and other leaders in the Bureau and the leaders of the provincial department have studied this matter many times, and after several months of ups and downs, the above finally decided to accept the donation.

Everyone in serious forensic cases was taken aback when they heard this decision.

"Damn, our bureau leader is really courageous in accepting the donation from the former godfather." Cheng Haiyang commented.

"Of course the leader of our bureau is not that stupid!" Qin Kai rolled his eyes at him, and began to introduce the news he got through the small way, "Li Xingguo is not that stupid, this money is donated in the name of our city's Charity Federation. It is said that Li Xingguo first donated the money to the Charity Federation in the name of the enterprise, and then asked the money to be used to upgrade the hardware of the city's public security system. If the donor makes a request for the direction of the donation, the Charity Federation will It must be satisfied. And, do you know who is in the Charity Federation?"

"Who is there?" the crowd asked.

"Li Guangmei!" Qin Kai said, "She is an honorary director of our city's Charity Federation! Besides, she is also the wife of the former district chief. Everyone knows that her husband was killed and we solved the case. Her father donated money. How can the charity association object to my daughter's proposal?!"

Everyone suddenly nodded.Fang Liyuan was a father at the beginning, when his father's love was overflowing, he couldn't help but sigh after hearing this: "Li Xingguo really loves his daughter."

Therefore, Li Xingguo's 100 million yuan, plus the 20 yuan approved by the bureau before, made a total of 120 million yuan, all of which fell into the pockets of the forensic team.Cheng Jinsong has the money in his hands, so he naturally wants to make good use of it.So for a while later, he and several people from the forensic team conducted detailed discussions and research on the purchase object of this fund.They analyzed various advanced instruments and software at home and abroad, combined with the current situation of the forensic team and the types of daily cases, and finally decided to focus on improving the electronic criminal investigation technology of the forensic team.As a result, more than half of the 120 million yuan was used to purchase software and hardware.As the capacity and processing power of the server increase, more things can be done.So Cheng Jinsong contacted other departments in the bureau and connected many system databases here.The road electronic eye system that played a major role in solving the case before was the result of the cooperation between the forensic team and the traffic detachment.But that's not the most important thing. Cheng Jinsong and everyone in the forensic team are most excited. , and the DNA database of abducted children—connecting them all!In other words, no matter whether the person was abducted because of committing a crime or his or her children, as long as he (she) has left DNA information in these DNA banks, it can be found in the forensic team.Coupled with the cooperation of DNA testing equipment, today's forensic team can quickly collect, quickly analyze, and quickly compare the DNA at the scene of the crime. A method of solving crimes that can determine the identity of a suspect with a few keys is now about to become a reality.As soon as the good news came out, it quickly spread throughout the criminal investigation team, then throughout the police station, and finally even alarmed the provincial department.So the leaders of the provincial department were very happy and announced that they would come to the forensic team to inspect and see this legendary and magical system for themselves.The so-called short-handed, since the leader has already spoken, the subordinates can only "happily" accept the task.So for the past few days, Cheng Jinsong and several people from the forensic team spent every day in the laboratory, debugging the system, preparing for demonstrations, and cleaning up.

"Oh, I just knew that the money above is not so easy to get..." On the evening of June 6, after Cheng Jinsong checked the PPT to be presented tomorrow for the last time, he stretched his waist and complained.

Shen Yan handed Cheng Jinsong a glass of water, and asked worriedly: "Your system has just been fixed, right? Is it working? There won't be any problems when the leader inspects tomorrow, right?"

"The system has been simulated for a period of time, and it should not be a problem in terms of stability. But the key to how effective this system can be is not the program itself, but the capacity of DNA samples in the database. Only when the number of samples is large, Comparison is meaningful; and only when DNA can be compared can this system be truly used to solve crimes. In fact, we have already achieved it at the technical level, but the number of DNA samples was too small before, and it was useless to get it out. Over the past few years, more and more departments have collected DNA, and the capacity of the database has also increased. Now the number of DNA samples in the library has reached 70. But you also know that our city has a permanent population of more than 800 million. In fact, our current The storage capacity only accounts for about 9% of the city's population. Therefore, it is extremely normal to not find a matching DNA, and it is good luck to find it." Cheng Jinsong drank all the water in the cup, and then said with a little hope, "I just hope that the visiting leaders don't come to a demonstration on the spot. If you don't find a matching sample, it will be lively..."

Early on May 7.

Today, everyone in the forensic team came to the bureau early.Different from the casual clothes in the past, today everyone is wearing a police uniform, which looks quite handsome.The windows of several offices of the forensic team are clean, and the instruments in the laboratory have been wiped clean, waiting for the inspection of the leaders.

At 8:[-] in the morning, a group of [-] leaders from the provincial department and various sub-bureaus came to the Municipal Public Security Bureau, accompanied by Bureau Wang, to visit the upgraded forensic team.Several members of the forensic team introduced to the leaders the equipment and functions of each laboratory, as well as the role it can (has) played in criminal investigation work.

"Everyone, this is our information technology inspection room." Cheng Jinsong introduced to the leaders, "This place was originally responsible for audio-visual processing. After this equipment upgrade, we have turned it into a multi-functional information technology processing center. .In addition to the analysis and processing of the original audio and video files, the city's road traffic monitoring, railway and air passenger lists can also be directly retrieved here; in addition, we have also systematically integrated several major DNA databases in the city. That is to say, if we find the DNA of a suspect in a certain case, we can compare it with the DNA in the DNA bank. If the information of the person can be found in the DNA bank, then we can quickly determine The identity of the suspect, and then quickly solve the case."

"Oh, this is the DNA testing system!" Hearing Cheng Jinsong's introduction, the leaders became very interested.Cheng Jinsong also knew that this was the highlight of the day, so he winked at Shen Hao. Shen Hao understood, walked over and turned on the big screen, and began to demonstrate.

"Look, everyone," Cheng Jinsong pointed to the big screen and began to explain to the leaders, "This is the DNA of the criminal suspect we found in a previous homicide case. We will amplify it by PCR and then use electrophoresis to quickly The suspect’s DNA was extracted, and then compared in the database, it was found that he was consistent with the DNA of the suspect in the previous wounding case, which helped us quickly locate the murderer.”

While Cheng Jinsong was explaining, Shen Hao demonstrated the entire identification process on the big screen through animation.A director of a provincial department asked, "How long will it take to complete this set of inspections?"

"About two hours."

Hearing this sentence, several leaders instantly showed surprised expressions.Everyone has worked in the system for many years, and they have more or less understanding of these criminal investigation techniques.In the past, this set of DNA tests was as fast as a day, and it could take a week if it was slow.Sometimes the criminal police who handle the case may have arrested everyone, but the DNA has not yet produced results.But now this process can be completed in only two hours, which greatly shortens the waiting time, which means that this system can really play a role in the detection process.

Just when several leaders were amazed, another leader said: "Xiao Cheng, what does your technology extract DNA from? Do you have to use blood?"

Cheng Jinsong followed the voice and saw that the speaker was Deputy Director Lu of the Chengdong Branch, so he replied: "Blood, semen, fluid, saliva, dander, or even feces are not necessary, as long as there are cells and tissues, DNA can be extracted from it."

"Is the snot okay?" Chief Lu asked.

"If there are residual cells and tissues, it should be fine."

"Great!" Director Lu instantly showed a joyful expression, "A few days ago our branch took over a car smashing case, and the criminal left a tissue on the scene where he had blown his nose. Our people checked The suspect has not been found for several days, and I have to ask you for help today!"

As he spoke, Director Lu waved to a person next to him, who immediately took out an evidence bag from his bag.Through the transparent bag, you can clearly see the tangle of paper towels inside.

Cheng Jinsong's back felt cold——tnnd, this is really scary! ! ...