After pushing the wheelchair to the interrogation room, Liu Yanshi could not enter anymore.

She stopped, leaned over and gently pressed her face against the wheelchair. She walked her hand gently across his neck and stroked his back.

"Don't be afraid... Everything will be fine, don't be afraid..."

Her tone was extremely gentle.

Her eyes were full of pity.

"Shi Zuocai" blinked blankly and reached out to keep her. As soon as she opened her mouth, saliva flowed down from the corner of her mouth.

The policemen present, including Xing Guangkun, subconsciously realized something was wrong when they saw this scene.

But now we can only follow the procedures.

The policeman handcuffed Shi Zuocai, who yelled in horror. Liu Yanxi walked towards another interrogation room and looked back at him from time to time.

It was finally easy to calm down in the interrogation room. The policeman sitting opposite him breathed a sigh of relief and looked at the files in his hands.

"Is it right that you call Zuo?"

"Shi Zuocai" nodded. The policeman looked down and looked again. His name and student ID were all right.

"You said, you killed Fu Sizhe?"

"Shi Zuocai" raised his head, his eyes were dull, and he was silent for about a minute, and began to murmur mechanically:

"Fu Sizhe... Damn..."

The interrogator felt a stern.

"Shi Zuocai" continued to murmur in absent mind:

"Fu Sizhe is a scum, a waste, a coward... He makes Ying Er unhappy... If he dies, Ying Er will not be unhappy..."

"On Friday night, I waited for him at the bus stop. I knew he was going home very late. I told him, 'Ying'er was unconscious at my house', and he believed it - he was so stupid. He believed it, and he followed me to my house. Then, I knocked him out, fed him to sleep pills, a lot of sleep pills... He slept until Saturday."

The interrogator turned his head uneasy and glanced at Xing Guangkun. From each other's eyes, they read the same meaning: This person is not mentally normal.

"Then, on Saturday night, I got lost in the person who was looking at the cold storage door. I dragged him into the cold storage. I dragged Fu Sizhe into the cold storage and hid it in the corner. Then I locked the door-and then, I pretended to be a beggar, went to the security guard in the community, tricked him into the cold storage, and confused him."

"I want to kill him, but if I kill him, I will go to jail. I don't want to go to jail. I want to find someone to take the blame. I found those two people and I thought of a solution..."

"I spend money, I want a beggar to help me do things. When the beggar has money, he can do anything. He lends me his clothes, and as I told him, he comes to lock the cold storage door at 11 o'clock... and turns off the switch. I was in the cold storage, pretending to be Fu Sizhe. I woke up the two people and said we were going to be killed. Everyone was very scared, so they moved the shelves and blocked the door... I put the box on it."

"Then, I lied to them and said...I was tired. I was going to sleep by the shelf. They ignored me and went back to bed by themselves."

"When they fell asleep, I took out chloroform and confused them again. Then... I dragged Fu Sizhe, left his fingerprint, dragged him next to the two of them, and slapped him to death with bricks... Then, I waited. When the cold storage melted snow and melted snow, I could push the shelf. I pushed the shelf out, and called the beggar to come and open the door. He came to help me open the door, and helped me put the box back on the shelf... In this way, no one would doubt me..."

After saying that, "Shi Zuocai"'s body trembled, he took a breath, and looked at them with a look of begging for rewards.

The interrogator and Xing Guangkun looked at each other, their hearts were extremely heavy.

With his confession like this, no matter how hard it is to hear it, it is something that people who can't say clearly can do - but the confession he provided is consistent with the police's speculation about the entire double secret room.

You should know that the police strictly prohibit the case from being disclosed to irrelevant persons. If this person really did nothing, how could he say such a confession that was completely consistent with the on-site investigation?

The interrogator knew that this was difficult and asked cautiously:

"You can first explain clearly where did you get the chloroform used by the security guards and the owner of the aquatic shop?"

Shi Zuocai was silent for a while and said, "It's... the school... on Saturday afternoon... I went to the school... I am from the third year of high school..."

There was a knock on the door outside the interrogation room. Xing Guangkun opened the door, and Xia Liang was standing outside the door with panting. He glanced at Zuo Cai in the interrogation room and signaled Xia Liang to come in.

When he walked into the interrogation room and saw Zuo Cai, Xia Liang was stunned.

"The school's laboratory... was locked...but the school's lock is very old and can be pried open with the student card... using the leverage principle, I went in and took chloroform and other materials..."

The interrogator frowned:

“What material?”

Shi Zuo Chuai murmured: "I...I want...sulfur hexafluoride..."

Xia Liang suddenly interrupted: "It's sulfur and fluorine."

Xing Guangkun frowned and looked at Xia Liang. Xia Liang turned his head with a serious expression:

"I just went to Hinaguang and their lab was stolen. The chemicals that were missing were sulfur and fluorine, and chloroform... sulfur and fluorine could be synthesized by combustion."

“What is the use of sulfur hexafluoride?”

"Shi Zuocai", who always seemed to be in a daze, heard this question and subconsciously answered in extremely fluent language:

"The density of sulfur hexafluoride is five times that of air. After inhalation, it will fill the surrounding vocal cords. When humans make sounds, the vocal cords vibrate. What is driven to vibrate is not ordinary air but sulfur hexafluoride. The density of sulfur hexafluoride is large and the vibration frequency is low, which will make people speak louder."

Xia Liang raised his eyebrows. He remembered that when he entered his brother-in-law's bedroom, his voice became a little thicker - obviously, it was the effect of inhaling sulfur hexafluoride.

"If the voice becomes thicker... you can... pretend to be an old man... so that no one will doubt me."

"Shi Zuocai"'s tone of speech became intermittent again, and his pupils were dispersed.

Xia Liang's brows became tighter and tighter. He listened silently.

The interrogator asked:

"Why do you do this?"

After a moment of silence, Shi Zuo said:

"Fu Sizhe... is a scumbag... a waste... a coward... he died... Ying Er wouldn't be unhappy..."

The interrogator leaned on the back of the chair and looked at him with a frown:

"What do you mean by this? Do you think Fu Yinger hates Fu Sizhe?"

"Not I think..." Shi Zuocai raised his head and smiled dumbly: "I'm sure... no one in the world knows Fu Yinger better than me. I know everything, and I know everything about her."

"You guys met a long time ago?"

"No...I only met her after she transferred to school..." Shi Zuo Cai tilted his head and smiled, with obsession in his eyes: "When I saw her, I knew that I was her destined...guardian..."

"Guardian?" The interrogator opened his eyes wide:

"What does that mean?"

"Fu Ying'er cares about me very much..." Shi Zuocai murmured: "I care about her too... At the beginning, we chatted on the phone every day, but she didn't want her parents to know about our relationship... So, I called her, she didn't have to answer, and I hung up after ringing five times... In this way, she understood what I wanted..."

Xing Guangkun frowned and quietly pulled a criminal policeman beside him, asking him to investigate Fu Ying'er's call record. Xia Liang's heart slowly sank.

Shi Zuocai was still shaking his body in the wheelchair, saying one sentence, nothing more:

"I know everything... everything... Fu Yinger's family affairs... Her father owes a lot of money, and she can't afford to change. Her father is not a good thing... Fu Yinger originally lived in a big and big house, but now she can only live in a very small house. Fu Yinger's mother is also crying..."

"Wait..." the interrogator asked: "How do you know these things?"

"Fu Yinger... told me in person..."

"What did she tell you in person?"

"Yes... in her home."

"Have you been to her home?"

"I haven't been there before... She is pretending to talk to her mother, but she is actually talking to me. We have a good understanding of each other, I know... I heard it..."

"How could you hear what they say in their own home?"

"I can hear it. Ying Er loves me very much... She keeps the gift I gave her at home, so I can hear it."

Xia Liang narrowed his eyes and soon realized something was wrong. He leaned into Xing Guangkun's ear and lowered his voice:

"I heard from the students on the side of Hinaguang that Fu Yinger was scared to tears when she was frightened... Team Xing, could he be a psychopath?"

Xing Guangkun sighed and whispered: "I hope he is not."

The interrogator took a breath and asked again:

"Since that's the case, why did you choose to come from the head?"

Shi Zuo slowly lowered his head, his shoulders trembled, and when he raised his head, his facial features were distorted.

"Do you still need to ask... I was betrayed by Fu Yinger."

Everyone in the interrogation room was stunned.

"I paid so much for that ungrateful woman... As a result, I told her that her trouble was solved by me, and she also got angry at me, saying that she wanted to call the police to kill me... Such a heartless woman... Such a woman..."

Shi Zuo murmured "this woman" several times in a row, and then roared like crazy. Several detectives rushed up to him and pressed him. He struggled desperately, his saliva, snot and tears flowed.

"Let me go! I don't want to die! Let me go! Let me go... Mom... Dad... Let me go..."

He cried hysterically, feeling like epilepsy, and soon, white foam came out of his mouth.

At the same time, in the interrogation room on the other side, Liu Yanxi was already lying on the table, crying in the rain.

"I have been dating Shi Zuo for more than a month, and I never knew that he had a split personality... I didn't know that there was such a personality hidden in his body... I only learned about this two days ago... I didn't expect that he would do such a terrible thing to Ying Er..."

...

No one expected that this bizarre case would have such a hasty and weird ending.

The murderer surrendered himself - he was a "wanderer" with high IQ and schizophrenia.
To be continued...