traces of all things

After Wei Xiongfeng finished speaking, the whole audience fell into a look of confusion.

The one who was most confused was Xue Yiwei. He had an expression of "Who am I and where am I? Did I miss something?": "Team leader, what does this have to do with the case?"

Lu Zheng made a gesture of "Be safe and don't be impatient" at them, and presented the two physical evidences that he had just put a lot of effort into researching.

"Everyone present here should have seen the physical evidence on my left." He stretched out a slender finger and pointed: "There are only a few scraps of paper left in Professor Ignition's office, now let us Compare it with another incomplete printout of the thesis found in Professor Guan's office during the re-examination site."

While talking, Lu Zheng put on his gloves and turned the other physical evidence to page No. 17, adjusted the projector again, and magnified the two physical evidences several times and put them on the big screen.

After being roasted at the fire scene and soaked in water later, the handwriting on the two physical evidences is already very blurred, and some of them are yellow and brittle, so it is not easy to see clearly.

Everyone present squinted their eyes, trying to discover something incredible.

Xue Yiwei's English level is the best, and his eyes are also sharp. After staring for a long time, he really found something: "...It seems that the content of the paragraphs is similar? No, the words are almost the same."

"Indeed." Lu Zheng nodded in praise, stretched out his hand and zoomed in again to focus on the bound paper: "Page No. 17 of this paper, the text content that can be displayed and the paper fragments used to ignite Professor Guan's office It is exactly the same as above, this should be the same printed paper, the difference is that there is no chart on this bound book, but from the strip of paper we can see that this piece is faintly visible above the text, it should be the content of a chart , marked 'Figure Eight' at the bottom. Look here again."

The magnifying glass on the projector is no longer enough, but fortunately, the people sitting in the conference room are all professionally trained, and their eyes are unremarkable. With Lu Zheng's explanation, they can see that small square clearly .

"This piece is the 'add note label' in Word's review function. When inserting text, the note label can automatically display the time. After zooming in, we can see that the label revision time is noon on August 8th. Twelve o'clock, the editor is Guan Bin, and the content is 'Picture 25 needs to be inserted here'."

"So, this bound book was printed out after Professor Guan entered the office for the last time. According to the surveillance video, after entering the office at 11:50, Professor Guan never came out again until his body was Fire officers and soldiers found it."

"And the printer in his office shows that he only printed one document during that time."

Speaking of this, Lu Zheng's eyes narrowed slightly, with a scorching gaze: "Then we conducted a survey among Professor Guan's students. The participants in this paper include Professor Guan Bin, Zhou Xuehai, Jin Yi, and Wang Yong. Jin Yi received an email from Professor Guan at [-]:[-], asking her to change part of the paper. Jin Yi quickly added Figure [-] requested by Professor Guan, and then at [-]:[-] At the time, I replied the latest version of the paper to Professor Guan and pushed it to Zhou Xuehai and Wang Yong. We investigated the mailboxes of Guan Bin, Zhou Xuehai and Wang Yong, and there was no forwarding record.”

"The answer is already very clear. The paper used in Professor Guan's office comes from the latest revised version of this paper, and only Zhou Xuehai, Jin Yi, Wang Yong, and Professor Guan have received this revised version of the paper. Both Jin Yi and Wang Yong have alibi. Professor Guan's printer record does not contain this revision record, and the records of the public printer show that only Zhou Xuehai's computer was on it from the time Professor Guan Bin sent the email to the incident. Printed documents - all suspects have been ruled out, all evidence points to one person."

**

"Is that Zhou Xuehai?" Lu Zheng looked at the people in the interrogation room in front of him: "We met again."

Zhou Xuehai in the chair looked a little confused and at a loss.

Seeing this, Lu Zheng tilted his neck and gestured to Tang Shaoyuan beside him.This time the interrogation was led by Lu Zheng and Tang Shaoyuan, with Wei Xiongfeng assisting.

Seeing this, Tang Shaoyuan nodded, and the two of them understood each other's meaning after exchanging glances.

"Hi Zhou Xuehai, I'm Tang Shaoyuan from the Provincial Public Security Bureau." He said slowly, "You are also a very good student at school. Professor Jinsen's group exchange study for a semester, right?"

"...Yes." Zhou Xuehai nodded cautiously.

"I also studied at X University for my undergraduate degree, so I am very familiar with it."

"Ah." Zhou Xuehai hesitated a little, as if he didn't know why Tang Shaoyuan suddenly chatted with him about the daily life, and he was a little puzzled: "... how are you, brother?"

"Don't call me senior brother." Tang Shaoyuan's poker face suddenly pulled unhappily: "Officer Tang is fine, it's not relative, so what's the relationship?"

Wei Xiongfeng at the side: ... I don't know what to say, I'll just look at the sky.

Zhou Xuehai didn't know whether he was frightened or guilty, so he shut his mouth and dared not speak.

"Okay, let's continue, you just need to answer yes or no." Tang Shaoyuan continued to state like a normal person: "According to our communication with the CSSA and OIA of University X, you did not choose to rent the school by yourself during the exchange period." offered postgraduate housing, but opted to live with a host family based on OIA recommendations, didn’t you?”

"Yes."

"Very good. At the Bauer couple's house where you are boarding, they have a son, little Bauer, who suffers from narcolepsy and has been treated in the University X Hospital for a long time, taking a drug called Xyrem regularly, isn't it?"

Zhou Xuehai's face changed dramatically, and then he lowered his head and stopped talking.

"This drug is a controlled neurological drug. There is a more popular name called GHB. I don't know if you understand it?" Lu Zheng added, with a pair of round eyes half-squinted, looking rather sharp. Staring at the friendly young man in front of him.

**

"What should we do? Team leader? He just doesn't say anything." Wei Xiongfeng spread out on the chair outside the interrogation room in a bit of distress. The interrogation in the room was still going on, and Geng Zhizhong rushed over to help after finishing his work on the other side. Now Zhou Xuehai was surrounded by the room It was Geng Zhizhong and Xian Hongru who attacked the fortress again.

While frowning, Wei Xiongfeng "clicked" the lighter in his hand, wanting to light a cigarette for himself.

Unexpectedly, Tang Shaoyuan took the cigarette out of his mouth first: "I have to smoke it outside."

"What are you doing?" Wei Xiongfeng looked displeased: "I've never seen you being so difficult, don't you smoke yourself?"

Tang Shaoyuan didn't argue with him, and calmly threw out a sentence: "Senior brother doesn't smoke, don't let others smoke second-hand smoke."

Wei Xiongfeng took a look at Lu Zheng who was sitting on the side thinking, silently swallowed his retort, opened the door and walked out.

The room was clean again.

Looking up at the clock, Tang Shaoyuan realized that it was almost five o'clock in the morning.

It was still dark outside the window, and there was no moon tonight.

The black window reflected Lu Zheng's chiseled side face, his brows were furrowed, his mouth was slightly pouted, looking very distressed.The bright round eyes in the past are also a little bloodshot at this moment.

After all, he hadn't rested for dozens of hours, so he looked very tired.

However, Tang Shaoyuan, who is also a criminal policeman, can't tell him to let him take a break.

Every minute and every second of Zhou Xuehai's 24-hour detention is precious and cannot be wasted.

Zhou Xuehai usually seems to have a good temper and is easy to talk, but his tone is unusually strict. After a few hours, he still doesn't say a word, only answers some insignificant things, and successfully escapes the set of words set by Lu Zheng and the others. Several verbal traps, even if the body and mind are tense, there is no slack.

It is indeed a very difficult opponent.

"That's for sure. A doctoral student from the Normal University of A Province has designed such a complicated set of secret room killing methods. It must be very powerful in terms of IQ." Wei Xiongfeng complained.

Indeed, Zhou Xuehai was undoubtedly one of the most difficult opponents in Lu Zheng's years of police career.Various TV dramas and novels often exaggerate the image of so-called high-IQ criminals, but in reality, real high-IQ criminals are still rare. People often make mistakes under a huge psychological burden. It is easy to be spotted by the sharp-eyed criminal police.

However, once you meet one of this type, it is often several times or dozens of times more difficult than other prisoners.

"Click."

Tang Shaoyuan got up gently when he heard the voice, picked up a washed mug, and took out two small sealed bags from his pocket.

One contains ground coffee powder, and the other contains a fan-shaped filter paper.

After washing his hands, he unfolded the filter paper and poked it on the mouth of the cup. Tang Shaoyuan carefully poured the bag of coffee powder into it, and then poured hot water.

The intimate contact between boiling water and ground coffee stimulates a rich aroma, with a hint of hazelnut aroma.

Sitting beside the bed contemplating, Lu Zheng moved his nose and turned his head immediately.

Tang Shaoyuan saw that he had come to his senses, and couldn't help but smiled tenderly: "Is it disturbing your thinking?"

"No." Lu Zheng shook his head, his round eyes looked at Tang Shaoyuan's hand.

Tang Shaoyuan was amused in his heart, and suddenly he felt a little bad-hearted. He let Lu Zheng's eyes circle around the mug several times, and it was obvious that he was about to reveal his little thoughts. He just pretended not to see it, and just looked at it with a smile on his face. he.

Seeing that Tang Shaoyuan didn't respond, Lu Zheng turned passive into active: "Shao Yuan, are you sleepy?"

"That's right." Tang Shaoyuan said solemnly, pulled a bag full of sugar in his hand and poured it into a cup, and stirred it lightly: "So make some coffee."

Lu Zheng watched his movements straight away, said "Oh" with twists and turns, and said solemnly: "Well... I've been here for too long, and I'm a little sleepy too."

Tang Shaoyuan almost burst out laughing, forced himself to go back, and replied with a sincere face: "Then senior, do you want to wash your face?"

...isn't it?

...Could it be that the little brother has forgotten me, the big brother!

... He was obviously very sensible when he first came here!

... No, Shao Yuan is not that kind of person, he must have not understood my hint, yes, that's it.

While Lu Zheng was fighting frantically in his mind, he suddenly heard a suffocated laughter coming from his ears.

"Why don't you drink a cup of coffee? There's a lot of sugar added."

A cup of steaming, warm coffee was pushed in front of him.

Looking up, I saw Tang Shaoyuan pursing his lips vigorously, but the smile seemed to be unable to control himself, overflowing cheerfully from the corners of his eyes and face.

"Looking for death! Make fun of your brother!" Lu Zheng couldn't help but cursed with a smile, and felt a little embarrassed after thinking about it: "Thank you Shao Yuan, what about you?"

"I don't need it." Tang Shaoyuan tilted his head and looked at him seriously: "It's enough for you to drink."

It's a bit strange... Lu Zheng couldn't help touching his arm.

Has Shao Yuan's speech always been so nasty?

"Hey, that's right." Before he could think about it, Tang Shaoyuan looked down at his phone and said with a smile, "Brother, do you want some breakfast? Daxiong and the others seem to have bought it. We have to go in and change the boss later." The class of the two of them."

"Oh, okay, I just happened to be a little hungry too." Lu Zheng immediately put his thoughts behind him and rubbed his belly: "Are they going to the biscuit shop across the door? Give me something stuffed with carrot and beef." .”

"Ah."

Tang Shaoyuan nodded, lowered his head and swiped twice on the screen of the mobile phone, then raised his head again: "They said that the biscuit stall has not opened yet, so they went to the pancake and fruit shop at the street corner, and asked senior brother how many eggs you want to crack."

"One is enough..." Lu Zheng was talking, when suddenly, as if he remembered something, a carp sat upright: "Wait, what are you talking about? Pancake fruit?"

Tang Shaoyuan nodded in a daze.

"Really! Why didn't I think of it!"

Lu Zheng suddenly clenched his right hand excitedly, knocked on the palm of his left hand, got up abruptly, and ran out of the office like a gust of wind.

Tang Shaoyuan got up quickly, and followed to the door in three steps at a time. When he looked around, Lu Zheng had already run into the stairwell.

In the distance, he suddenly stopped, turned around and waved at Tang Shaoyuan.

"I'll be right back, you stay in the house and don't leave!"

The author has something to say:

Brother Lu: Crazy Hints.gif

Brother Tang: Unmoved on the surface.jpg, but the marmot screams inside.gif

Brother, why did you run out?Let me continue to ask pretentiously, hahahaha you must all know.

----In case you complain that I use abbreviations and can't understand the small dictionary----

CSSA: Chinese Student Visiting Scholars Exchange Association, basically every American university has one

OIA: The Office of International Affairs, which is also found in almost every American university, manages the information of international students and visiting scholars and assists them in their lives

Xyrem: As shown in the text, a drug for the treatment of narcolepsy, the main ingredient is gamma-hydroxybutyric acid