The scene suddenly fell silent, and everyone looked at each other and thought unconsciously.

Indeed, Gu Chen's question made everyone feel that it seemed that the occurrence of the fire and various suspicions at the scene made this small secret room look extremely weird.

As for the questions Gu Chen said, no one could give definite answers, and even the landlord driver couldn't give enough reasons.

Lu Weiwei carefully observed the change in the driver's expression, and then asked him indifferently: "Your room is arranged like this, giving people the feeling that this is a flammable room in advance." ”

"And the lack of cat food, and the company of goldfish, this is difficult to figure out. ”

"Coupled with the fact that it caused a fire for no apparent reason, it seems that the fire was premeditated. ”

"This ...... You can't talk nonsense about that. The driver was stunned and quickly retorted: "Anyway, I don't know what's going on with all this." ”

"That is to say, all this is the result of your wife's arrangement?" Gu Chen directly extended to the past according to the driver's master's words.

Because according to Gu Chen's understanding of the on-site environment, it seems that this room, as well as this pet cat, is more like a bureau.

Many suspicions can confirm that the room seems to be preparing for a fire.

Especially this hungry pet cat with only skin and bones, which made Gu Chen's suspicion of this room lead to a high tide.

The driver was powerless to refute at the moment, and only after a brief hesitation for a few seconds did he nod his head in acknowledgement.

Gu Chen then walked to a burned sofa, looked at all kinds of burned wood and sponges, as well as the charred spring, wrapped a handful of powder in a paper towel and held it in his hand, and then handed it to everyone.

"Look, what is this?"

"Burned powder?" Xu Zhenggang froze for a moment.

"No, no, it's like lime powder. "The fire captain seems to recognize the substance.

And after Lu Weiwei and Yuan Shasha looked at each other, they both set their eyes on the driver.

The driver's master was unaware, and after looking down carefully, he suddenly asked Gu Chen with an incomprehensible look: "Comrade policeman, don't sell it." ”

"I really don't know what this thing is, and now that you say that, it makes me confused. ”

"You don't have to keep being confused. Gu Chen took the paper wrapped in powder in front of his eyes and said indifferently: "What Comrade Firefighter said just now is right, this is lime powder, and it is lime powder that has had a chemical reaction with water. ”

"Quicklime?" Yuan Shasha was the first to ask.

Lu Weiwei was also stunned for a moment, and immediately answered: "Quicklime and water, these two things seem to be discussed together as long as they are mentioned." ”

Gu Chen nodded slightly and asked, "But have you ever thought about why this lime powder is in the room, and what does this have to do with the fire?"

"Could it be that quicklime reacts chemically with water and causes the fire?" the firefighter leader suddenly frowned, feeling a little interesting.

If Gu Chen's guidance was said before, everyone couldn't grasp the key point of the cause of the fire.

So now it seems that Gu Chen has given a substance that is quite close to the truth.

Xu Zhenggang frowned, looked at Gu Chen and asked, "I said Gu Chen, there is lime powder in this room for some reason, could it be that someone estimated that it was placed here?"

"Do you need to say that?" Gu Chen glanced at the driver's master, and then turned his attention to the security guard of Kaitian Property and Lu Weiwei, and said indifferently:

"Just now, my colleague Xiao Yuan has investigated the surveillance with the property manager and confirmed that no strangers have sneaked into this villa during these days.

Then there is only one possibility, these lime powders were deliberately placed here by the wife of the driver's master. ”

"What...... What?," The driver was suddenly stunned, and he didn't react for a long time.

"Yes!" Gu Chen looked at the driver, his expression was obviously not as confused as just now.

Being able to find this evidence, it can be said that Gu Chen probably knows the answer in his heart.

"Senior Brother Gu. Thinking of this, Lu Weiwei felt that it seemed a little simple, and couldn't help but say: "Then according to your meaning, with this thing, the source of the fire can be found, that is, quicklime and water, right?"

"Is quicklime and water so powerful?" The property security guard listened to Lu Weiwei's words, and the whole person was also puzzled: "How do I feel that it will only release a lot of heat, but ignite objects, is there such a situation?"

"Absolutely. Gu Chen also smiled indifferently: "It mainly depends on the temperature it produces, whether it can reach the ignition point of the object, and if it can, it can ignite the object." ”

The scene suddenly fell silent, and everyone turned their attention to the lime residue next to the sofa.

Yuan Shasha and the firefighters even squatted down and carefully checked the amount of lime powder in the room.

"Senior Brother Gu. Yuan Shasha glanced back at Gu Chen and said, "With this amount of the scene, can it really ignite objects?"

Gu Chen nodded and said, "That's right, because the main ingredient of quicklime is calcium oxide, its appearance is white solid, and it is fire-resistant. ”

"But when it reacts with water, it emits a lot of heat or absorbs moisture from moist air. ”

"And when you add water to quicklime, you will see that the whole water immediately boils, and a lot of steam comes out, which produces a lot of heat, and the temperature will be very high. ”

Seeing that everyone's eyes were focused on him, Gu Chen said again: "Do you know? In fact, many people use the process of adding water to quicklime to generate a lot of heat, and put eggs in it to make a lime boiled egg. ”

"But usually, by the time the egg is taken out, the whole egg is already ripe. ”

"And this phenomenon is very easy to see in the construction of houses or construction sites in the countryside. ”

"This heating method is a more environmentally friendly way, because in the whole process, no other harmful substances are produced except for heat release, and energy is not wasted. ”

The fire captain nodded and said: "Listening to you say this, there is some truth, I have seen it before, using the process of adding water to quicklime to generate a lot of heat, and putting eggs in it, the temperature is indeed quite high." ”

Listening to the words of the fire leader, Gu Chen suddenly squatted down, picked up a burned wooden stick from the ground, and walked to the wall.

Gu Chen used the wall as a blackboard and wrote the chemical formula of the reaction between quicklime and water "CaO+H2O=Ca(OH)2" on the wall.

Then he turned to the crowd and said, "Actually, there are two kinds of reactions, one is to pour water into quicklime powder, and the other is to put quicklime into water. ”

"Huh. The property manager couldn't help laughing twice, and when he saw everyone staring at him with strange eyes, he smiled indifferently: "I said comrade policeman, this is ...... Isn't it all a reaction of water and quicklime? Isn't it the same who joins in?"

"If you think the same, you're wrong. Gu Chen also looked at the formula on the wall, and said lightly: "Just like the first reaction phenomenon, the water slowly boils and evaporates dry, and it will turn gray and turbid halfway, and then all the water fully reacts." ”

"That'...... What about the second phenomenon?" Xu Zhenggang, who was holding his chin with his hands on his chest, suddenly felt that he was a scumbag.

"The second ......" Gu Chen glanced at everyone, and then said: "The second phenomenon is that the lime gradually dissolves and generates heat, and then all the quicklime will fully react." ”

Picking up the blackened wooden stick in his hand, Gu Chen drew "Ca(OH)2" in a circle, and then said: "This is a chemical element after the reaction, it is a strong electrolyte, but the solubility is not very good, it should be slightly soluble, and there will be a difference in the above phenomenon." ”

"If the two are strictly equal and react adequately at the same time, the phenomenon is close to the first case. ”

"And the reactive substances in my hand are more like pouring water into quicklime. ”

"To reach the ignition point of an object, it depends mainly on the temperature it produces, and if it can, it can ignite the object. ”

"Wait. The fire leader suddenly interrupted Gu Chen's words, he looked at the blackened walls around him, looked around and said, "So, this is the real reason for this fire, because the water is introduced into the quicklime, which produces a lot of temperature and releases heat. ”

"And when it all reaches the ignition point of the object, it ignites the surrounding flammables, which subsequently starts this fire. ”

After integrating these things, the firefighter leader looked at Gu Chen and said with a smile: "Brother policeman, I didn't expect you to know so much, but the problem is, if these quicklimes are prepared by the owner and his wife." ”

"But why did the fire start today? You know, his wife and children have been away from home for a week, and it is impossible to do this. ”

Gu Chen nodded slightly, then looked at the dead cat's corpse and said, "The driver's family has indeed been away for a week, but I didn't say that this chemical reaction was done by his family!"

"It wasn't his family who did it, could it be ......" Lu Weiwei, who looked at the dead cat's corpse, said suspiciously: "Could it be that the cat did it?"

"That's right. Gu Chen answered directly, then pointed to the dead cat's corpse and said, "This fire was indeed caused by this cat." ”

"But it was not voluntary, but after being manipulated, after creating evidence of the operator's alibi, it inexplicably became a substitute for the dead, because all this was laid out by the driver's wife. ”

"I ...... My wife?" the driver shook his head in fright, and quickly retorted: "How can you say that? What does this have to do with my wife?"

"And you said that this cat, it caused the fire, how did it do it?"

"You want to know?" asked Gu Chen.

The driver nodded fiercely: "I want to know too much, at least I have to figure out, why my house is suddenly on fire, at least why did the water and quicklime suddenly react?"

"It's because of the cat food. Gu Chen pointed to the dead cat's corpse with Jio and said, "Because when your wife was preparing the cat food, she didn't prepare the amount of about ten days at all, but it was probably only three or four days." ”

So the kitten was hungry after eating all the cat food, so it set its sights on the goldfish. ”

"That's right. Lu Weiwei picked up the fragments of the fish tank on the ground, and then said in surprise: "This may have contained goldfish, but now the goldfish are gone, and they were obviously eaten by cats." ”

"However, if there is no fire in the room, no sign of warm electricity, the gas switch is closed, and there is no timer ignition device, then the fire can only be caused by the cat. ”

Looking at the bookshelves that had long been burned down next to her, Lu Weiwei smiled and said, "If I guessed correctly, this goldfish bowl must have been placed on top of the bookshelf before." ”

"When the kitten is so hungry after eating the little food given to him that he can't help it, he will go and grab the fish tank on the bookshelf. ”

Lu Weiwei said this, and Yuan Shasha also hurriedly answered: "So, the final result is that the fish tank fell down and poured on the quicklime. ”

"Quicklime reacts chemically with water to mature lime, and the heat released by this process ignites the books on the shelves and the flammable materials around them. ”

"That's right. Gu Chen snapped his fingers and smiled happily: "So the result is that although the kitten ate the goldfish in the fish tank, it also poured the water in the fish tank on the quicklime, so it caused this fire." ”

"And this house is precisely a closed existence, after eating the goldfish, although the kitten is full, but there is no way to escape from the room, so it suffocates to death, and then it is scorched by the fire, and it will become what it is now. ”

Looking at the dead cat's corpse at his feet, Gu Chen said again: "If I'm not mistaken, the goldfish that was eaten into the cat's stomach should not have been digested, if you want to confirm whether what I said is true, you can know whether it is true or not, just dig open the cat's belly to know whether it is true or not." ”

The fire leader on the side glanced at Gu Chen, and immediately took out a multi-functional saber from his body, then squatted down and cut the burnt cat's belly with the blade.

It didn't take long for the firefighter leader to find the remains of a goldfish in the cat's stomach.

"Huh. The firefighter leader turned his head to look at Gu Chen, and said with an indifferent smile: "Brother policeman, what you said is right, these goldfish have just been eaten into the cat's stomach, and they haven't been digested yet." ”

"Oh my God. Xu Zhenggang on the side also saw Gu Chen restore everything that happened in the room according to a small amount of evidence at the scene, and the whole person was also stunned.

His eyes changed when he looked at Gu Chen now, and he couldn't help but say: "I said Gu Chen, you can use this little thing to reason for such an accurate result, you ...... What the hell do you have in your head?"

Gu Chen also smiled indifferently: "Usually use your brain more, when you stay in this suspicious environment for a long time, you will also have this keen observation, it's just a professional habit." ”

"Brother policeman. At this moment, the fire leader who put away the multi-functional saber couldn't help but give a thumbs up and said:

"You've given me a lot of insight today, and you can deduce it like this, and it feels like everything here can't hide from your eyes, you're really a bit powerful. ”

"Haha. Listening to the appearance of the firefighter leader praising Gu Chen, Lu Weiwei couldn't help but be happy, and she was also angry:

"It's a bit interesting for you to say this, and I don't want to inquire, my senior brother Gu is in the Furong Branch of Jiangnan City, who doesn't say that he is powerful? ”

"Is that because I'm lonely?" the fire leader also smiled.

But while everyone was silent and uncovering the mystery of the fire, Gu Chen suddenly set his eyes on the driver, stepped forward and asked him:

"The facts are clear, if your wife is the last to leave the villa, then your wife is the one who set the fire. ”

Looking the driver up and down, Gu Chen was suspicious again: "Could it be ...... You conspired with your wife to set this fire?"

"Absolutely...... Absolutely not. was also taken aback by Gu Chen's words, the driver was stunned, and quickly defended himself: "I don't know what my wife is doing at home?"

"You know, this is my house, why should I burn down my house? Am I sick?"

"Gu Chen. Xu Zhenggang looked at him and reminded softly: "He's right, who is so willful and has nothing to do with burning his own house to play?"

Gu Chen hesitated for a few seconds, and hurriedly said to the driver: "In this way, you immediately call now, ask your wife to go home quickly, and go directly to the Furong branch when you come back." ”

"And you must also go to the Seremban branch with us now to explain the situation here, and we need to compile a detailed investigation report. ”

"But I'm going to run Didi tonight. The driver said.

Lu Weiwei also said angrily: "I said that you are really, the house has been burned, and you are still running Didi? This matter is very serious, do you know?"

"It's a good thing that it just burned your family, and if it endangers other residents, how many lives will it take?"

"Intentionally setting a fire to endanger the lives and property of others is a felony. ”

Listening to Lu Weiwei's scolding, the driver didn't dare to speak, and he was also dizzy at the moment, and he didn't know how to solve the current problem for a long time.

Gu Chen glanced at the property manager beside him and said, "In this way, you are responsible for sealing off the scene and not letting anyone enter the room." ”

"This one is reassuring. The property manager also patted his chest and promised: "I'll go get some things later and seal this door." ”

"Good. Gu Chen nodded, then looked at the driver and said, "Master, then please drive Didi again and go to the branch with us." ”

......

......

10:30 p.m.

Seremban Substation, Interrogation Room No. 1.

After a night of combing, Gu Chen basically recorded the situation of the driver master completely.

The driver's original name was Xu Youcai, who was originally a rich name, but now it seems that not only did his career suffer, but even his only house was destroyed by this ruthless fire.

Throughout the night, Xu Youcai honestly explained what he knew.

proved that he really didn't know what kind of situation his wife was going to deliberately cause this arson.

After receiving the police interrogation, Xu Youcai's wife also traveled under the stars, and finally took a taxi to the Furong branch at four o'clock in the morning.

Inquired all the way, a middle-aged woman wearing a white down jacket and a slightly haggard makeup, and then trotted all the way to the third criminal investigation group.

At this moment, there are only three folding beds open in the office.

Gu Chen, Lu Weiwei and Yuan Shasha were lying there flat at the moment, squinting slightly.

It was also after hearing the knock on the door that Gu Chen slowly opened his eyes and looked up at the person at the door.

"Are you?" Gu Chen got up and asked her.

"I am Xu Youcai's lover, and you asked him to call me. The middle-aged woman took the initiative to step forward and said.

"Oh, you sit down first. Gu Chen sat up, and then clubbed Lu Weiwei and Yuan Shasha beside the pestle, and a few of them got up stubbornly.

Then, the middle-aged woman sat on Officer Wang's chair in a daze, while Lu Weiwei and Yuan Shasha stood alone.

After Gu Chen finished debugging the camera, he also moved the stool in front of the woman, and then opened the transcript and said: "Let me introduce myself first, I am Gu Chen from the Criminal Investigation Group 3 of the Furong Branch, this is my colleague Lu Weiwei, this is Yuan Shasha." ”

"Hello. ”

Lu Weiwei and Yuan Shasha also nodded slightly, which can be regarded as a simple acquaintance with the middle-aged woman.

"Do you know why I called you back?" Gu Chen asked with a twist of his right hand.

The middle-aged woman nodded: "Yes...... It's because my house was burned. ”

Gu Chen suddenly stopped turning his pen, raised his head and said, "What's your name?" ”

"Oh, my name is Hao Tong, and my ID number is ......"

Hao Tong was also nervous at the moment, so he hurriedly informed Gu Chen of his personal information completely.

After recording it, Gu Chen asked again: "Ms. Hao, the specific situation is like this, your house suddenly caught fire tonight, after all kinds of efforts by the firefighting, as well as tonight's heavy rain, the main building was finally saved." ”

"But the interior has been completely burned down, including the cat you have, and the goldfish. ”

It was also when Gu Chen mentioned cats and goldfish that Hao Tong's gaze was obviously dull, and then he quickly calmed down.

Xu Youcai, the hesitant driver, only informed him that his villa was burned, and the information provided to Hao Tong was also very little.

Coupled with the police summons, Hao Tong is also a starry night, and he doesn't know anything about the situation here.

But Gu Chen's deliberate question just now startled her, as if those little Jiujiu in her heart were suddenly known.

Listening to Gu Chen's words, Hao Tong also smiled indifferently: "Comrade police for your hard work, I really don't know how to thank you." ”

"If you really want to be grateful, you shouldn't set that fire. Lu Weiwei, who was standing beside her, also had no good air.

Hao Tong was stunned for a moment, looked at everyone unconsciously, and then said angrily: "I said comrade policeman, what do you mean by this? My house has been burned." ”

"I know, of course you don't need to be reminded of this, you set the fire. Lu Weiwei also continued what she had just said.

"Huh. Hao Tong couldn't help laughing twice, looked at Yuan Shasha and Gu Chen on the side, and then retorted: "Comrade police, you ...... Are you mistaken? You said I set the fire? I'm not in Gangnam City. ”

"And I also heard my husband call and say that our house was on fire and the house was gone, so I asked me to come back quickly, so I rushed over in the starry night. ”

Looking at Gu Chen's indifferent eyes, Hao Tong said again: "This time I returned to Jiangnan City, I will hurry to your Furong Branch, and I will not stop for a moment, my parents can testify." ”

Gu Chen nodded slightly: "So what?"

"So?" Hao Tong looked at Lu Weiwei, and said angrily: "So this female comrade indiscriminately said that I set the fire, and I am sick?

"And then I ran back in the starry night, and then I got your ignition and ran back?

was also angry by Lu Weiwei's words just now, Hao Tong directly hugged his chest with his hands, his head tilted, and he looked like he wanted to theorize with Lu Weiwei.

Lu Weiwei also said with a smile: "So, in the room where your house is closed, what's going on with the quicklime?"

As soon as Hao Tong said this, his expression was dull for a moment, and he secretly glanced at Lu Weiwei.

"Also, your cat has been hungry for many days, right? You haven't prepared enough cat food at all, your cat is even hungry, and you put a tank of goldfish on the bookshelf, this is the rhythm of not enough cat food for goldfish?"

Listening to Lu Weiwei's words, Hao Tong's face was stunned, and Dai frowned slightly: "You...... What are you talking about? What cat food and what lime?"

"Don't pretend to be Hao Tong, we all know it. Yuan Shasha also glanced at Gu Chen beside her, and then said to Hao Tong: "My Senior Brother Gu has restored the fire scene according to the scene environment. ”

"You should know that this cat doesn't have enough cat food to eat, so you deliberately placed a fish tank with goldfish on the bookshelf, and when the cat was hungry, climbed on the bookshelf, knocked over the fish tank, and swallowed the goldfish into its stomach to satisfy its hunger, it was also when the water in the fish tank was poured on the quicklime. ”

"And the reaction between water and quicklime, you don't know, don't you? It is precisely because of the release of a large amount of heat that it reaches a certain ignition point and ignites this flammable house. ”

"And we've checked, in addition to a large number of flammable objects next to the bookshelves, the closed room is covered with still wallpaper, which is what caused your home to burn down. ”

"Because from head to toe, it's all your own orchestration, right?"

"I ......"

Hao Tong's whole person was suddenly stunned.

Her eyes changed as she looked at the three of them.

It was also when Yuan Shasha explained the situation to Hao Tong according to Gu Chen's investigation results, and Hao Tong trembled with fear.

It seems that the starry night came here just to convict himself?

"I ...... Where's my husband?" Hao Tong took out his mobile phone in a panic and said tremblingly: "I...... I don't want to talk to you, I ...... I'm looking for my husband, I'm going to call him. ”

As soon as the voice fell, Hao Tong had just dialed the number, but the phone rang from Gu Chen's desk.

Gu Chen also put down the writing pen, then took Xu Youcai's mobile phone in his hand, shook it, and said: "You don't have to worry, your husband Xu Youcai is also staying in the Furong Branch, after you explain clearly, we will arrange for you to meet him." ”

"What...... What?" Hao Tong lay down on the seat in distraction and muttered, "You guys...... You arrested him too?"

"So...... Why are you setting the fire?" Gu Chen said.

......