the next day.

When Yang Rui came to the Stockholm Police Station again, twice as many police officers gathered on the second floor office area.

Some policemen with high-level epaulettes also appeared inside, standing with Sherwood and chatting easily.

And near the door, there are several reporters holding cameras, looking for angles.

Yang Rui was a little surprised, but not surprised.

Although I don’t know if it was the reporters who attracted the senior police station or the senior police station who attracted the reporters, as long as there was a smell of fresh meat, it was not surprising whether it was the wolf or the miserable person.

Yang Rui's yellow skin was recognized by the reporters without introducing it. They were not many, but they still blocked their way and asked: "Mr. Yang Rui, I heard that you are going to use high-tech to challenge the Marle case. Is that true?"

If there are not many reporters, there will be noisy situations, but fewer reporters mean that questions are more difficult to answer.

Yang Rui looked up at Sherwood, Director Sherwood nodded slightly, not knowing whether he nodded or agreed to Yang Rui's answer to the question.

Yang Rui didn't think too much about it, and said first: "It can't be said to be a challenge. We just want to provide the police with more tools to handle cases so that they can have more choices when investigating. PCR instruments are a tool. The Stockholm police are still challenging the Marle case. We are just logistics personnel."

This answer can be called humble. The police who could understand English nodded silently and their attitudes improved a little.

If Yang Rui took a lot of money and said that he would replace the police's work, they would naturally not be happy.

"Mr. Yang Rui, some people say that the Marle case was completed by two murderers. What do you think about this?" A reporter looked like he was fighting on the page and asked questions with urban strange conversations.

Yang Rui said calmly: "We are just tools. Our PCR instrument will give as much information as possible. As for how to interpret the answer from this information, it is the job of the police."

Yang Rui’s idea is very clear today. He is here to promote PCR devices, not to fight with the police.

In fact, his idea is exactly the opposite. He hopes that more police and police stations will use PCR, that is, use DNA identification technology. On the other hand, Yang Rui does not want PCR to be regarded as a simple criminal investigation technology by society, which is too insulting the value of PCR, just as nonsense that X-rays are pure medical equipment.

"Mr. Yang Rui, how confident do you have about today's test results?" The reporters found that they could not dig out heavy information from Yang Rui, so they reluctantly returned to the topic.

Yang Rui said: "I have 100% confidence."

"Why?" The reporter finally caught a topic and asked quickly.

Yang Rui shrugged and said, "The accuracy is very high when compared with DNA. Through the amplification of the PCR device, the probability of failure of the test is very small."

After stopping, Yang Rui felt that he couldn't say it clearly and said, "It may be easier to understand if I describe it like this. If the police use DNA to judge the murderer, the DNA of two people will not appear in the 6 billion people around the world. Not only that, judging from the probability, all the human DNA born in the history of human beings in the past few thousand years will not be completely the same. Therefore, I have 100% confidence in using such accuracy as the basis for judgment."

"Will there be no human operation errors?" A professional reporter said incisively: "How to avoid human operation errors?"

Yang Rui smiled and looked at the reporter, saying, "I am a scientist. In the scope of science, I will achieve my goals as much as possible. Maybe you can ask God to make a judgment on your request."

Everyone smiled softly.

The reporter just pretended that he didn't hear it and said, "What do you mean is that there will be human errors?"

If it is in a normal question and answer form, Yang Rui should probably answer "of course" at this time and explain it in detail.

However, in a foreign country, Yang Rui became more sensitive. He thought about it a little more. What would happen if the reporter reported PCR out of context?

The first thing I encountered was the court's doubts.

Unlike later generations, in the 1986, no country has recognized DNA evidence. In other words, convictions with DNA itself require disputes.

Yang Rui cannot leave such a handle in public.

At least, he cannot leave such a handle as the inventor of PCR and as a well-known genetic expert.

Thinking of this, Yang Rui waved his hand without hesitation and said, "What we are discussing today is not a human error, but a look at the test results. How can we complete this task first?"

He seemed to ask the person below, looking at Director Sherwood.

The police chief is also a very politician. He noticed Yang Rui's dodging answer and immediately thought of the corresponding results. He said in a flash: "Let's look at the test results now. If the test results meet our expectations, the Stockholm police may adopt this technology to solve the Marlès case. Please give it up."

The people in the office made way and let Yang Rui and Sherwood walk into the room where the PCR is placed.

"Let me introduce it." Yang Rui nodded to Huang Mao and Tu Xian.

"How to introduce it?" Huang Mao and Tu Xian were both a little nervous.

"Let's talk about what you have done in the past two days." Yang Rui said, turning around and smiling at the camera.

Tu Xian and Huang Maotui let it go for a moment, Tu Xian stood up and said in English: "Yesterday, we collected the police officers' DNA and also got a bunch of hair with skin. After that, our test was to determine who the hair was."

Police officers who participated in the test smiled, and some raised their hands.

In front of the media, the Swedes have also become more lively.

But that's all.

"Now, please give the answer to Director Sherwood, and we will reveal our answers." Tu Xian finished speaking, as Yang Rui arranged in advance, a photo of a bunch of hair and a photo of several police officers participating in the test was posted on the whiteboard in front of him, just like a crime drama in Europe and the United States in later generations.

The reporters soon discovered that this method was extremely intuitive and took photos one after another.

The police officers in charge also handed the envelope with the name written to Sherwood.

Sherwood did not take it apart immediately and said first: "Mr. Yang Rui, please release your comparison pictures."

"Tu Xian." Yang Rui shouted.

Tu Xian coughed, took out two rolls of paper from under the PCR instrument and said, "The principle of the PCR instrument is actually to expand DNA. We have now made images of DNA. You can see that there are two images of DNA that are consistent..."

He said, opening the two rolls of drawings and hanging them on the other whiteboard next to them.

The two specially printed drawings are all full-color, colorful blocks, bumpy and concave on a line, forming a strange figure.

"This is Drawing A." Tu Xian pointed, then expanded another one and said, "This is Drawing B. You can see that Drawing A and Drawing B are consistent..."

"Where are other pictures? Let's see what's inconsistent." Someone among the reporters shouted.

Tu Xian glanced at Yang Rui, benefited from it, and spread out all the other drawings.

Without he specifically explaining, everyone realized that other drawings are different.

"It's pretty beautiful." A female reporter praised it.

Tu Xian said in a depressed manner: "This is automatically generated by the machine."

"Tu Xian, read the owner of your confirmed hair." Yang Rui reminded him.

Tu Xian said "Oh", lowered his head and checked it, and said, "We confirm that the owner of the hair is Ackerman."

What he said was mediocre and less passion.

Fortunately, all the people who came today were graphic reporters, and they didn't care about his passion, so they turned their attention to Sherwood.

Sherwood smiled slightly, opened the envelope in front of him, glanced at it, and turned to everyone.

Ackerman's name is printed in floral characters and is displayed to everyone.

There were a burst of surprise sounds in the office area.

"Officer Ackerman, please stand up." Chief Sherwood called again.

I saw a tall Swedish man, smiling and raising his hand.

"Officer Ackerman, did you leave your hair yesterday?"

"It's mine." Ackerman laughed twice.

The reporters gave a slight applause, but the Swedish police officers present seemed quite dull.

Yang Rui curled his lips and thought, if this was played in the United States, it would have been a big fuss.

"Director Sherwood, so you will use new technology to deal with the Marle case, right?" A reporter raised the key points at this time.

Sherwood nodded slightly and said, "Not only in the Marle case, we will also use PCR technology in multiple cases."

Yang Rui was stunned, this was a bit beyond his expectations.

However, from Yang Rui's perspective, this is just a good thing, and he is not afraid of technology being tested.

In a blink of an eye, Yang Rui became excited again. It was rare to be handsome when he could see the technology he developed in his lifetime.
Chapter completed!