Police Detective

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Lao Qi’s daughter is back, and this time I must send Lao Qi to a nursing home, and it has to be the kind of nursing home that can’t jump off the building. Regarding this matter, Kong Suo agreed with both hands and feet, otherwise he would be in trouble in the future. Kong Suo couldn't imagine the scene of two people who are going to cut down a building and the other who is learning to fly together than to see who can urinate.

After Kong Suo was busy for a while, Bai Song didn't plan to patrol on Wednesday. He wanted to visit Brother Pan Chen and talk about the case. He doesn't understand the technical aspects, but that doesn't mean he can't help.

Called in advance to make an appointment, Bai Song got there, showed his ID, and went straight in.

Unlike what he imagined, the architectural style here is very ordinary, no different from other departments in the ministry. It is not the feeling that the sense of science and technology is overwhelming. Pan Chen is directly waiting for Baisong in the lobby.

"Brother, have you come down yourself?" Bai Song was a little embarrassed: "I actually came this time just to see if I can help, I'm afraid it will cause you trouble."

"How can it be a mess?" Pan Chen said: "In fact, this is not as high-tech as you think. We just know some basic laboratory operations. This is not something I invented."

"Brother, are there any successful cases in the practical application of this?" Bai Song asked.

"Do you remember the silver case that was solved last year?" Pan Chen said.

"Remember!" Bai Song was surprised.

The silver case is also known as the serial homicide case in Silver City. Between 1988 and 2002, 11 women were brutally murdered, and the murderer has been at large. In March 2016, the Public Security Department of Gansu Province restarted the investigation, which used Y-STR technology to capture the suspect Gao. After interrogation, the suspect confessed to the crime he committed. (See Wikipedia for details)

"In July this year, the Silver Intermediate People's Court opened a trial for this case, because privacy was not disclosed," Pan Chen said: "But in our industry, the Y-STR technology used in this case is very representative. In fact, daily work Most of this technology is used to find suspects, and very few find the dead."

"Brother, how far have you dealt with it now?" Bai Song asked.

"In fact, this is faster than you think. It is estimated that there will be a preliminary result tomorrow." Pan Chen said: "But this technology actually has many limitations, so I won't tell you about it here. You just need to know that this is actually a query Family is enough, some data has been extracted so far, and it's pretty smooth."

"I checked it on the Internet yesterday and said that this kind of query is easier for the smaller population flow, isn't it?" Bai Song said: "I can go to the hole and take blood from some households around the area where the corpse was found. sampling."

"What you said makes sense, but the trouble is not here," Pan Chen said: "General cases have a broad scope. Your case has no other materials at all. In fact, it puts a lot of pressure on us. Use Y -STR and ITO methods need to have a control group, and this control group is the whole country, if you can find out, you can write a paper. So this may be a long-term process, for example, I give you a region, you I have to go there for sampling. At least there are fifty or hundreds of different types of control groups at one time before I can come back and compare them. As for the deceased, the surrounding area is no longer needed. The deceased should be from Shandong Province at present. "

"A native of Shandong?" Bai Song was startled: "My fellow!"

"Lu Province is very troublesome," Pan Chen shook his head: "Lu Province is one of the few provinces with large-scale population movements after the founding of the People's Republic of China. There are a lot of people entering the east of the pass, which adds a lot of trouble to our traceability."

"It's okay, brother, as long as we give a head here and a direction for investigation, we are not afraid of trouble."

"Yeah," Pan Chen said: "You follow me upstairs."

After going upstairs, Bai Song learned in detail about this technology that has only matured in recent years, which cast a shadow over this case.

The Y-STR method is mainly effective for areas with stable family inheritance and weaker personnel mobility. It is too difficult to go to Beijing. If there is no database now, there is no way to check it.

For Pan Chen's side, Bai Song actually had a little misunderstanding. Pan Chen is a researcher. He does not have a strong desire to solve the case. He just wants to do a good job of research. It is naturally the best to find out some family information about this case, and it is also technically limited.

Therefore, the phrase "there will be a preliminary result tomorrow" that Pan Chen said to Bai Song did not give Bai Song an exact answer, but only a result. As for the result, there is no guarantee at all.

Bai Song was very fortunate that he had come here. He knew that Pan Chen might have similar results from many families. He planned to send notices to all regions directly after he arrived in the bureau to investigate the situation of missing men in this family.

Originally wanted to invite the seniors to have a meal in the evening, but Pan Chen had other things to do in the evening, so she had to give up. After returning home, he called out several juniors and sisters. In addition to the two on duty, the other four and Bai Song discussed for a while, and had no new ideas, just enjoying dinner happily.

After eating, Bai Song received a call from the Lou Detachment. Today, he conducted surveys in the four neighborhoods around the area where the corpse was found, and found nothing.

"Bai Chu, the case on our side is suspended for the time being," Lou Detachment said: "Today the police dogs are all exhausted, and it doesn't make much sense to expand the scope again."

"I understand," Bai Song said: "Leave the case to us at that time~www.wuxiaspot.com~ If you have specific clues, I will contact you."

"Good, good," Lou Detachment sighed and hung up the phone.

When Bai Song came, the poisoning case was very difficult. As a result, Bai Song was about to leave and reappeared again. It was really eventful.

Although the Secretary did not put him under too much pressure, the detection rate of homicides this year is definitely not 100%, and it is definitely not a good thing for him.

"I don't want so much, cheers." Bai Song held up the drink and drank it with the four juniors.

Bai Song didn't drink, but several of the juniors drank. They are not on duty today, and they have experienced a lot of things recently. Drinking some wine and talking for a while makes the pressure less.

"Brother, I don't know when I can handle so many cases like you," Zhang Cheng drank and spoke rather casually.

"Is your life bad now?" Bai Song asked.

"The police station is boring. We don't have a dime salary for the internship now. I really want to end the internship soon... well, if there are always cases that can be handled..."

"Drink less," Bai Song said: "Many days when you desperately want to escape now, you will find that after many years, it will be difficult to go back, so cherish it."

(It’s 6k today, take a break early, sorry)

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