The body was moved away.

Wang Tao and Tan Yi from the fire brigade entered the crime scene together. They started from the door and inspected the inside little by little.

Half an hour later, the two came down from the building.

Captain Wang talked eloquently, "The supermarket uses roller shutter doors, and the doors did not fall down, so we can first be sure that the murderer drove straight in; secondly, the supermarket is more than 80 square meters, and almost all the passages are splashed with diesel. Burning traces of accelerants can be found upstairs and downstairs. The fire started at the door, and the murderer just threw a cigarette butt to complete the entire crime process; finally, I think the murderer is very experienced and left almost no clues. What do you think, Captain Tan?"

He is about the same age as Tan Yi. Perhaps because he is good at his job, he always has a bit of superiority.

Tan Yi said, "Captain Wang, you explained it very comprehensively, but Locard's Law of Exchange of Materials tells us that as long as the murderer commits a crime, he will definitely leave traces at the scene. As long as we are patient, we will always find clues."

Wang Tao tilted his head slightly, glanced at the messy crime scene, and raised his lips slightly, "Okay, our job is done, and it's up to you next."

Tan Yi said, "Thank you for your hard work."

Wang Tao said, "It's not hard, it's what I should do, then... we wait for your good news?"

He actually used a question?

Wang Zheng didn't like it very much and glanced at him with the corner of his eye.

Tan Yi said, "Captain Wang, don't worry, we will do our best."

Wang Tao got on his car and left with the fire truck.

Wang Zheng tutted, "Who are you? If you don't know, you might think the chief of the fire brigade is here."

Tan Yi said, "They are not related." He turned and walked towards the two crying boys.

Before he arrived, the two children knelt down on their knees.

"What are you doing!" Tan Yi leaped over and picked up the two children one by one. "It is our duty as police officers to seek justice for the deceased."

"Uncle police, you have to do this for me... me... sob..." The older boy couldn't finish a sentence and burst into tears. The younger

child shouted, "Revenge! Revenge! You have to avenge my father and mother, and my grandfather and grandmother!"

The grief came too suddenly. The two children's faces were full of tears, their eyes were full of despair, and their voices were hoarse from crying.

Tan Yi touched the little boy's round head: "Don't worry, we will definitely bring the murderer to justice. But can you calm down for a while and tell me some things, such as whether your elders have quarreled with anyone recently, and whether they have any enemies?"

The little boy burst into tears again, "I don't have a father and a mother, I don't have a grandpa and a grandma, father... mother..."

The adults behind the two children spoke at the right time, "Officer, I am the child's aunt, the children don't know those things, I know, and I have already told the police over there."

Tan Yi said: "I know you have said it, but I still want to ask the children what they know."

After investigation, this person named Wan Chunlan is not only a relative of the victim, but also one of the neighbors of the victim.

Her confession is certainly important, but the confession of the children should not be ignored.

Wan Chunlan's face quickly darkened, "Officer, the dead are my father, my mother, my brother and my sister-in-law. How can I lie?"

Tan Yi also put away the smile on his face, "This is the normal process of our police work, please cooperate."

Wang Zheng also said, "The more clues our police have, the easier it is to solve the case. Please understand."

Seeing Tan Yi's toughness, Wan Chunlan softened again, "Yes, yes, as long as it can solve the case, we will of course cooperate." She took out two pieces of toilet paper from her pocket and wiped the older child's face, "Okay, your parents are gone, and in the future it will only be you and your brother. You have to be stronger, understand?"

As soon as she said this, the older child, who had slowly calmed down, started crying again.

Wan Chunlan wiped her tears and slapped herself on the face, "You see, I can't talk either. The more I try to persuade her, the more I cry."

Wang Zheng and Tan Yi looked at each other, and they both thought in their hearts, please don't let it be done by a close relative, that would be too cruel.

Tan Yi patted the older child on the shoulder and said, "It's okay. Everyone will be sad when a loved one passes away. I have time to wait until you've cried enough."

The older child calmed down again and said, "I've cried enough.

Go ahead and ask." A fat woman who was watching the excitement said, "Officer, go to my house and ask. I'll prepare some cups of hot water for you. Ask slowly."

Wan Chunlan said angrily, "Isn't this the time to quarrel with my mother? Go away. There's room in my house. You don't need to pretend to be kind."

The fat woman showed no weakness and said, "It's as if you don't quarrel with your mother. We just had a few words, but you cursed the whole Wan family."

"You son of a bitch!" Wan Chunlan stretched out her hand to chase him away.

Wang Zheng stopped her, "Why did you do it? I remember you didn't mention it before. You and the victim had a quarrel."

Wan Chunlan said, "No matter how much we quarrel, they are still my parents. How could I kill them?"

Wang Zheng pushed her hand back, "Who killed the victim needs to be determined by evidence and law, not by your so-called family affection."

Wan Chunlan snorted coldly and shook her arms, "If you kill your own parents, how can you still be called a human being? It's really a thankless task. Let's go."

She stepped on a pair of mid-heel shoes and walked towards her family's delicatessen.

Tan Yi stared at her back for a while.

At this time, the older boy spoke up: "Uncle police, could it be that my aunt killed my parents?"

Tan Yi asked: "Is the conflict between them deep?"

The older boy said: "The cooked food made by my aunt's family is not delicious, and the business is not good, so she wanted to open a supermarket with my dad. My dad thinks that my aunt is picky and my uncle is too lazy, so my grandparents refused."

"Do your aunt and uncle hate them?"

"My uncle doesn't know, but my aunt visits my grandparents every day."

"What about the relationship between your two families in the past?"

"It was okay before, but my mother always said bad things about them in front of my dad and grandma. But my grandma was still very good to my aunt, and she would send them any delicious food."

"What about the cheap little restaurant next door to your house, why did she quarrel with your grandma?"

"Then I don't know."

The little boy said, "I know that Aunt Chang's dirty water is always splashed at the entrance of my supermarket. My mother said that flies and mosquitoes would fly up immediately, so she told them not to splash at us. But Aunt Chang said that the road is not mine, and she can splash wherever she wants."

Tan Yi frowned. They were all trivial matters. Four lives were lost because of this?

It shouldn't be.

He suddenly doubted his previous judgment, extending from sleeping pills to the SQN case.

After a moment, he shook his head. Although the mastermind of the SQN was a pervert, he should not kill people randomly.

The little boy wiped his tears with his sleeve, "Uncle police, do you think Aunt Chang killed my parents?"

Tan Yi said, "Uncle, I think a normal person would hardly kill someone for such a small matter. Then uncle wants to ask you, who do you think is not mentally normal, like a mentally ill person?" The

older boy said, "I think my eldest aunt is not normal. When she quarreled with my family, she was more violent than a shrew. This... If they are all dead, then my aunt has succeeded?"

Tan Yi said, "If she really killed them, she can still pick you up so calmly and talk to the police fluently. Do you think it is possible?"

The older child thought for a while and said, "No, my aunt has a bad temper and she will get angry at any time."

As he was talking, a police car came flying and stopped. Ren Yaguang got out of the car with two search warrants stamped with red seals.

He raised his head, "Captain Tan, it's done."

Tan Yi nodded and said softly, "The police uncle will have someone take you home. I will send someone to notify you as soon as there is a result, okay?"

The big boy didn't want to leave, and his head turned away, "My aunt has the key to my house, I don't want to go back."

Tan Yi took the search warrant, gave the Chang family's search warrant to Wang Zheng, and told Ren Yaguang, "Take them to the car and let them wait in the car."

Ren Yaguang did so.

Tan Yi led a few police officers into the Xiangpengpeng delicatessen.

Wan Chunlan was sitting at the door. Seeing this, she stood up suddenly. "What are you going to do?"

Tan Yi said, "I suspect you are related to the death of Wan Donglai's family. Here is a search warrant."

Wan Chunlan exploded. "Fuck, fuck, there is no law. Those are my parents. You can't find the murderer. You want to use me as a scapegoat? I tell you, no way!"

She said as she rushed towards Tan Yi. "The police killed people. The police harassed me! I will fight you!"

Tan Yi stepped aside.

The police behind her grabbed her arm and grabbed her. "If you do this again, I will sue you for assaulting a police officer!"

"Sue me, sue me, sue me, do you think I am afraid of you?" Wan Chunlan struggled desperately.

A thin middle-aged man came down from the building, followed by a fifteen or sixteen-year-old girl.

The middle-aged man angrily questioned Tan Yi: "What are you doing to search my house?" The man had regular features, thick eyebrows, big eyes, and thin lips. He probably smoked frequently, and his lips were purple-red, but there was a kind of bookish air in his eyebrows and eyes.

Tan Yi raised his hand on his shoulder and waved it down, and the police rushed in, some went to the counter, and some went upstairs.

The little girl had never seen such a situation, and she cried.

Tan Yi said: "Mr. Zheng, where were you and your wife when the Wan family caught fire?"

Zheng Jiasheng went down the stairs "thump thump thump", raised his hand, and pointed at Tan Yi's nose.

Tan Yi said, "If you want to attack the police, I can help you. Let's go back to the police station and talk slowly."

Zheng Jiasheng retracted his fingers, clenched them into fists, and asked, "Of course I'm at home, where else could I be?"

Tan Yi said, "Where were you after the Wan family caught fire?"

Zheng Jiarong said, "What you asked are nonsense. Why didn't you go out to put out the fire? Did you just watch them burn to death?"

Tan Yi was indifferent to his questions and counter-questions, "Did you deliver food to the Wan family at dinner time?"

Wan Chunlan said, "Send bullshit, I can't even have enough food to eat, and I still deliver it to them. I don't have that big a heart!"

Zheng Jiasheng also said, "People look down on my family's cooked food, and there's no reason for my family to stick our heads in their faces."

Tan Yi said "Oh", passed Zheng Jiasheng, and went into the kitchen.

The Zheng family's back kitchen was very dirty. The black grease on the floor was sticky. There were lumps of sauce scattered on the stove. The big pot was filled with cooked meat. The meat was not strong in aroma, and it was completely different from the braised pork made by Xie Qing.

The child was not lying. This family was really lazy.

Zheng Jiasheng leaned against the door, looked at Tan Yi calmly, and said, "It's not against the law to be dirty."

Tan Yi ignored him, walked out of the kitchen, and went upstairs.