Gu Chen hadn't made much discoveries in the old lady's house before, so he couldn't use master-level reasoning to piece together known clues.

But now the appearance of an "ancient book" by Forensic Doctor Liu seems to have greatly alleviated his anxiety in this regard.

A blank sheet of paper.

A small drill.

A beginner's course on Braille.

The doubts that were originally clueless suddenly became one.

Gu Chen has always raced against time to handle cases, and it can be said that efficiency is the priority.

This kind of patchwork clue also made Lu Weiwei on the side look forward to it.

"A Braille Beginner's Course takes a lot of time just to learn, and the small holes left by the old lady in the paper look really worrying. ”

Lu Weiwei couldn't understand it anyway......

I feel that these small holes on the paper are a bit like reading a book from the sky.

But for Gu Chen, this is just a book, and it is still not too difficult for him.

It may take others a whole day to finish reading a book, but Gu Chen only needs five seconds to finish a page of a book, and he can memorize all the content on the page.

With this kind of specialization-level memory as support, all Gu Chen needed was time.

"Whoa...... Crash...... Whoa!"

In front of Lu Weiwei, Gu Chen began to open the tutorial, very seriously.

Although Lu Weiwei couldn't understand it, she still chose to sit opposite Gu Chen, holding her chin with her hands, and staring blankly at Gu Chen's serious reading.

I thought to myself: This Senior Brother Gu looks really handsome when he reads books seriously.

Last time in the library, Lu Weiwei had seen Gu Chen's speed of reading, and it can be said that she was shocked at that time.

If you want to talk about the speed of reading, Gu Chen is second, no one dares to say first, right?

Gu Chen suddenly stopped at a page, then took out a writing pen and wrote a few times under the small hole in the white paper.

And then ...... It's a flipbook again.

Bang bang, it's faster.

I don't know how many times Gu Chen paused, Lu Weiwei didn't notice it at all, her eyes were all focused on Gu Chen's face.

"Found it. Gu Chen suddenly pouted and smiled, looking up at Lu Weiwei.

Lu Weiwei immediately trembled, reacted from the state of distraction, and then quickly shifted her gaze and asked, "What's that...... What did you find?"

"Look at this. Gu Chen turned the blank paper over and handed it to Lu Weiwei in front of him.

Liu Geng...... Do you want to harm me?" Lu Weiwei read the text translated by Gu Chen, and was suddenly stunned: "This ...... What's going on? Why Liu Geng? Isn't Liu Geng a filial son?"

Lu Weiwei suddenly patted her head, and then came back to her senses: "Senior Brother Gu, are you sure there are no translation errors?"

"I can't believe it's true, but you see. Gu Chen didn't translate out of thin air, but compared the braille just now.

Forensic Doctor Liu was also attracted by Gu Chen and Lu Weiwei's shock, and hurriedly walked to Gu Chen's side.

Then he picked up the translated blank paper and held his glasses to read it carefully.

"Gu Chen, can you read Braille?" Forensic Doctor Liu said shocked.

"I don't understand, but I can use your book as a reference. Gu Chen said.

Forensic Doctor Liu unbelievably picked up the "Braille Elementary Course", then put it in his hand and weighed it, and said, "With such a thick book, you can find the translation font in such a short time?"

"That's right. Gu Chen said.

"It may take a lot of time for the average person to understand this book, but if you translate it directly, it's ...... That's outrageous, isn't it? Could it be a mistake?"

Anyway, Forensic Liu didn't believe it.

If Gu Chen really wants to have this special ability, wouldn't those candidates who squeezed their scalps to take the college entrance examination cry and faint in the toilet?!

However, when he saw the Chinese character "Liu" corresponding to the first braille, Forensic Doctor Liu's eyes widened slightly.

Then he hurriedly turned to the page with folded corners at the back, here is the second Chinese character corresponding to the translation of Braille, Gu Chen used the pen circle to make it clear, corresponding to the word "Geng".

Forensic Doctor Liu was a little unsettled now, and he continued to flip through it.

However, to his surprise, the braille that Gu Chen circled with his pen was combined into Chinese characters to "Liu Geng wants to harm me".

Forensic Liu checked it a third time and it was completely correct.

"How's it going?, is there a problem?" Lu Weiwei also asked Forensic Doctor Liu with suspicion.

"Gu Chen, you may be a genius. Shaking his head, Forensic Doctor Liu convinced: "If I study this kind of book, it may take two or three days, but ...... But it only took you half an hour. ”

"Is it really that powerful?" Lu Weiwei couldn't believe it.

Although I can't understand Braille, it may be my own problem, but even Forensic Liu is prohibitive, which can only show how difficult this book is to understand.

It takes time to understand and it takes time to find.

But Gu Chen's 30 minutes seem to have gone through the distance that Forensic Doctor Liu has traveled in two or three days.

This could not help but cause Forensic Liu to have a serious sense of frustration.

"I don't think there will be any misunderstanding here?" Lu Weiwei also raised her own questions, saying: "After all, when we went to Xijie Primary School Road together and found Meimei Supermarket, it was only nine o'clock in the morning." ”

The time of the old lady's death was between nine and ten o'clock, during which the clerk had called, and Liu Geng was in the wholesale market at that time, and there was no time to kill at all. ”

"He may ...... You can forge a time. Gu Chen said.

"Could it be that all this is his trick?" Lu Weiwei looked at Gu Chen thoughtfully, and said, "In other words, Liu Geng was lying at the time, and he was at home at the time, feeding the old lady poisonous lotus seed soup?"

Seeing Gu Chen and Lu Weiwei start to discuss, Forensic Doctor Liu became relaxed......

He wiped his forehead and said with a smile: "Whether it's right or not, since there is a result, then go and investigate, and you can always find the result by touching the vine." ”

"Forensic Doctor Liu is right. At this time, Officer Wang, who was staying at the door, also walked in.

"Lao Wang, the murderer may be Liu ......"

"I know. ”

Before Lu Weiwei could finish speaking, Officer Wang interrupted: "I heard it just now, Liu Geng, this guy is an actor, isn't it the time to commit the crime, let's find it." ”

"That's what I want. Lu Weiwei also clenched her fists, eager to act immediately.

Several people left the technical department and went directly to the wholesale market where Liu Geng frequented, asking the local vendors about Liu Geng's specific whereabouts between nine and ten o'clock.

"Has this person seen it?"

Coming to the door of a merchant, Gu Chen took out Liu Geng's photo.

"Isn't this the owner of the Meimei supermarket next door to West Street Elementary School?" said the chubby merchant owner.

"Then you just know each other?" Gu Chen asked.

"That's right. The chubby boss nodded and said, "He Liu Geng often comes here to buy goods, and we all know these old merchants." ”

"Then between nine and ten o'clock today, have you seen him in the wholesale market?" Gu Chen asked again.

"This ......" The chubby boss hesitated, turned around and asked a woman behind him: "Wife, do you remember when Liu Geng came to the market this morning?"

"When did Liu Geng come to the mall?" the middle-aged woman thought about it for a while, looked up and said, "He was in the wholesale market early in the morning." ”

"That means he's been to the wholesale market?" Gu Chen asked.

"Yes, I remember passing through the store several times, but he didn't go into the store to get the goods, and we didn't entertain, after all, he likes to pay on credit, but we can't distribute the goods, Liu Geng doesn't have much money in his hands, plus his old store is going to be demolished, maybe how long it will take to repay these payments, he still has some balance for me to settle it." ”

The middle-aged woman said a lot, that is, it means that Liu Geng has no money in his hand, so he asked him to distribute the goods to him, but there is no door.

"Then can you remember that between nine and ten o'clock, is he still in the wholesale market?" Gu Chen also recorded the situation just now.

"Well, it seems to be there. The middle-aged woman thought about it for a few seconds, and suddenly said: "Oh, by the way, he was around nine o'clock, as if he answered a phone call in the store next door to me, and he sounded like the clerk of the old store was looking for him, and then he told the owner of the store next door that he went to the toilet, and then he didn't see anyone, until almost half past ten, he went to the store next door and loaded the goods on the tricycle." ”

Gu Chen looked back at Lu Weiwei and Officer Wang, and all three of them seemed to be a little alert.

Officer Wang said, "How can you be sure it's between nine and half past ten?

The woman shook her head: "I didn't look at the time, it was the time for the boss next door to watch, and the two of us also joked, saying that Liu Geng had been in the toilet for so long, and I thought he had fallen into the toilet." ”

"That's right. The chubby shopkeeper also said: "This Liu Geng, ordered the goods next door, and there was no one directly, and he didn't answer the phone, and the next door thought he had gone to another place to order, and he was going to let the clerk move the goods into the warehouse again, so the clerk complained for a while, which I saw before Liu Geng came back." ”

"In other words, Liu Geng didn't show up at the wholesale food market between nine and half past ten?" Gu Chen looked up at the husband and wife.

The two were also stunned, and after glancing at each other, they nodded together.

"Maybe he's going to the bathroom, or maybe he's running other errands, but I haven't seen him all this time. The middle-aged woman said.

"Thank you for your cooperation. Gu Chen wrote a record and saluted the two of them.

Just as Gu Chen, Lu Weiwei and Officer Wang were leaving the non-staple food wholesale market, Officer Wang also received a call from a colleague in the dispatch room.

After "uh-huh" for a while, Officer Wang smiled and said: "The comrades in our dispatch room are very powerful, and it was found from the monitoring that Liu Geng, who was after nine o'clock, once left the wholesale market, went to a nearby porridge shop to buy lotus seed soup, and then took a taxi to the Jiangnan textile factory community." ”

"Did he really leave halfway?" Gu Chen also asked strangely: "That is to say, after receiving the clerk informed that a police officer had come to the old store, he deliberately delayed us in the old store on the grounds that he was busy with the work at hand, and then waited for the opportunity to go home to commit the crime, and then drove a tricycle to unload the goods in the new store, thus creating a false impression that he was not at the scene?"

And the lotus seed soup he bought was the food that was tested for toxic substances by Forensic Medicine Liu. Lu Weiwei also added.

Everyone was connected with clues, and everyone immediately looked at each other and smiled.

Gu Chen had seen in the hospital before that the moment Liu Geng knelt on the ground and moved towards his mother's corpse, he felt a faint heartache.

But he didn't expect that this guy would go to the textile community of Jiangnan City to feed the poisonous lotus seed soup to his mother knowing that the police were waiting for him in the old store.

"This kind of person should be cut with a thousand knives when he is caught, and this kind of thing can be done. Officer Wang also sighed twice, feeling that it was necessary to arrest him immediately.

"Senior Brother Wang, you can wait first. Gu Chen saw that Officer Wang was about to leave, and immediately reminded: "We don't have to go to him, let him come to us by himself." ”

"What do you mean?" said Officer Wang.

However, Gu Chen was already in his chest.

......

......

Five o'clock in the afternoon.

Riding a repaired tricycle, Liu Geng came to the compound of the Furong Police Station.

He parked his car under the canopy and ran to the office building.

After asking a policeman in the business hall, he went all the way to the gate of the third criminal investigation team.

"Tuk tuk tuk!" Liu Geng knocked on the door three times in a row and asked, "Is Officer Gu here?"

"I'm here. Gu Chen suddenly appeared behind him.

Liu Geng was also taken aback, and then asked, "Officer Gu, you called me and told me that the person who poisoned my mother has been caught, so where is he?"

Liu Geng also pretended to try to look around the office a few times.

Gu Chen didn't say a word, and put the rose gold handcuffs on his body directly on Liu Geng's hand: "That person is standing in front of me now." ”

"You...... What are you kidding, let me go, I'm here to find the murderer, how can you do this to me?"

Liu Geng also never expected that the police would come to this hand, and suddenly he was reluctant at the door of the office: "You let go of me, what do you want to do?"

"Don't expect us not to know about that little you've done. Lu Weiwei then also walked over, glaring at Liu Gengdao.

"Crazy, you are really crazy, I asked you to find the murderer who poisoned my mother, but you arrested me, what kind of policeman are you?"

Officer Wang, who stepped forward, rolled his eyes and suddenly said, "Don't you want to know why? ”

......

......

Interrogation room.

Liu Geng had been handcuffed at the moment, and the whole person was restless in the interrogation room, looking at the three of them with an anxious expression.

"Name. Gu Chen raised his head and asked.

"You...... Don't you already know?"

"Name. Gu Chen ignored him and continued to ask.

Liu ...... Liu Geng. Liu Geng replied angrily, feeling unhappy, and said: "Eh, I said you, what do you want to ......?"

"Age. ”

Before Liu Geng could finish speaking, Gu Chen asked a second question.

Liu Geng was dumbfounded, but he couldn't help it, so he could only lean back on the chair helplessly, pointed at Gu Chen and said, "Yes, you kid can." ”

"Age!"

“42。 ”

"Origin. ”

"Gangnam City ......"

A series of questions made Liu Geng obviously feel that he was now a suspect on trial.

More and more uneasiness began to make Liu Geng's expression more and more serious.

"What are you doing between nine and ten?" asked Lou Weiwei.

"Go to the toilet. Liu Geng leaned back in his seat, and his words became less and less.

"It takes an hour and a half for a toilet?" Gu Chen suddenly became excited, and said, "As far as I know, the public toilets in the non-staple food wholesale market are not equipped with toilets, aren't you tired of squatting there?"

"You just said you want to ask something, right?" Liu Geng's emotions began to show his angry side.

"Liu Geng, let me ask you, why did you poison your mother?"

Gu Chen's words were a bit heavy, or rather, he didn't believe that this seemingly tenacious guy in front of him, this filial son who was passed on by word of mouth in the neighborhood, would actually do such a thing.

It can be said that anyone with a little conscience would not use this means to poison a blind old lady.

And he, Liu Geng, is still the old lady's own son.

"I know you won't admit it. Lu Weiwei also stood up, took the sorted out case file materials in her hand, and walked in front of Liu Geng to show him.

"Here's what we've gathered, all the surveillance footage we've collected between nine and half past ten. Lu Weiwei stood in front of Liu Geng and explained: "And the reason why your mother died is entirely because of your share of lotus seed soup, which contains highly toxic substances, I think you should know very well, what did you do?"

has handled many cases, but like today, Lu Weiwei is the first time she has met her.

Liu Geng, who can see it, still has no intention of repenting.

A stubborn face always hung on the face.

"What else do you have to say? What is the cause of death for poisoning your mother? Aren't you a filial son?" Gu Chen struck while the iron was hot, and hurriedly asked at the moment when Liu Geng's defense line collapsed.

Then he took out the white paper with holes in it and said, "Your mother has recorded your criminal deeds in Braille before she died, what else do you have to say?"

Liu Geng suddenly shook his body and said angrily: "Because she didn't treat me as a son, she never did." ”

Liu Geng's voice was loud, but he couldn't frighten the police.

Officer Wang directly slapped the table and shook Liu Geng's arrogance back: "What are you roaring?

"You forced me. Liu Geng suddenly turned into an angry lion, and the whole person turned into a fierce beast in a blink of an eye from the calm and confused expression just now.

His eyes began to sharpen......

"Did you really do it?" Gu Chen asked again uncertainly.

Liu Geng said "um" again, obviously he didn't want to deny it.

All kinds of evidence point to him, and Liu Geng is not stupid, knowing that he is in a catastrophe this time.

Officer Wang slammed the table: "Okay, you Liu Geng, our police worked hard to help your mother find the cause of death, but you wrapped us in, let us believe that you have alibi, let us believe that you are a filial son, let us believe that you are an absolute victim, you are too cunning, and you have deceived almost everyone with your skillful acting skills." ”

After Officer Wang scolded for a while, he glanced at Gu Chen.

Gu Chen still had a serious expression on his face, which made Officer Wang unable to figure out his thoughts.

Gu Chen called Liu Geng, and using the trick of inviting you into the urn is indeed worth learning by himself.

"Liu Geng, you don't have a motive to kill, but why?" Gu Chen suddenly became serious and asked him seriously: "You can't pretend to be a filial son, but you have done something that violates the principles of heaven, isn't this very strange?

......