As soon as I got to the fifth floor, I heard the sound of endless quarreling, mixed with Shao Huai's helpless and helpless shouts: "Stop arguing!"Xie Guan and Jin Chen stopped at the corner at the same time.Xie Guanmu shook off Jinchen's hand with a dull face, "Don't expect me to take a step forward."Jinchen also had some concerns. He looked up and thought this was a good place to watch the battle. "Then stay here. Do you know those people up there?"Xie Guan frowned. He knew what was going on without even looking. “Aunt Zhao from 505 and Grandma Chen from 508, they always quarrel…”"What are you doing!"Shao Huai suddenly roared, changing his previous helpless expression, "If you make trouble again, I will call the police!"Jinchen's expression changed slightly when he saw wood chips flying around as the kitchen knife split the door frame.He rushed forward and dragged Shao Huai back by the collar. The mint box slipped out of his pocket and the sound of it falling to the ground was mixed with Zhao Chunmei's hysterical scream."Get out! Get out!" Zhao Chunmei slammed the door shut."I was scared to death!" Shao Huai wiped the bloody mark on his forehead caused by wood chips.Engineer Song huddled in the corner of the stairs, the wrenches in his tool bag clinking. "Blame me... It's all my fault..."Xie Guan picked up the box of mints and stuffed it back into Jinchen's hand. He glanced at Engineer Song who was bending over to pick up a screw, with a fresh scratch on the back of his neck.This is how the scratches come from...Even after Grandma Chen returned to her room, she was still cursing, "You shameless bitch!"In response to her was the clanging sound of a kitchen knife chopping down from 508, each chop carrying a hint of venting anger.Jinchen raised his chin and said, "Let's talk about it downstairs."They returned to the third floor."What's going on?" Jinchen asked, his eyes also falling on the back of Song Gong's neck, his eyelashes drooping in thought.Ten minutes ago.Just as Mr. Song went up to the fifth floor, Grandma Chen suddenly poked her head out from 508 and said, "Xiao Song! There's snow on my TV again. Can you come and help me check it first?""Okay, I'll go after I finish repairing this one." Engineer Song put the screwdriver behind his ear and gave an apologetic smile.When Zhao Chunmei opened the door and heard this, her face instantly darkened and she glared at Grandma Chen, "Master Song promised me first, and you're trying to steal my money again!"Grandma Chen came out tremblingly with a cane, "It's a waste of electricity even if you fix it! Are you going to keep it to harm others?""Watch your words, you old fool!" Zhao Chunmei clenched the vegetable basket in her hand.Shao Huai went upstairs at this time and was about to stop the fight when Grandma Chen suddenly sneered: "Did I, an old woman, say something wrong?""Are you waiting for your paralytic husband to die so that you can inherit the house? Don't bring harm to other people!"The vegetable basket fell to the ground and the cabbages rolled to Shao Huai's feet.Zhao Chunmei suddenly turned around and rushed into the kitchen, coming out with a boning knife, looking gloomy and fierce."You old bastard! I'll chop you to death!""Fuck!" Shao Huai subconsciously tried to stop him, but the blade grazed his shoulder.-"That's it, and then you came up." Shao Huai said, and touched his shoulder fearfully."Uncle, why did you say it was all your fault just now?" Jinchen asked again.Engineer Song sat slumped in the corner. "Last week, I went to the fifth floor to inspect the electrical box. I saw the door of 505 was open and Zhao Chunmei's husband was lying on the ground. There were marks on his neck... It looked like he had failed to hang himself.""I saved him."Jinchen: "Have you told Grandma Chen?"Mr. Song shook his head: "Grandma Chen discovered it herself.""She said... Zhao Chunmei wanted to kill her husband to get insurance money..."Xie Guan suddenly frowned, "Did Aunt Zhao also come to see you this Monday... yesterday?" Engineer Song looked up suddenly: "How did you know? But I had something to do yesterday, so I agreed to go to her house to fix it today."Xie Guan recalled and looked at Jinchen, "Zhao Chunmei came to the convenience store to buy bleach that day.""hiss……"Shao Huai realized something, "Isn't Zhao Chunmei holding a grudge against Uncle Song for ruining her good fortune?"Then there is a strong suspicion.It looks like he's already thinking about murder!Jin Chen hurriedly recalled the characteristics of the corpse in his mind, denied this guess, and said to Song Gong: "Uncle, as long as you are okay.""Go back and rest today. Don't go out unless necessary."Engineer Song was frightened and he really didn't expect that Zhao Chunmei still wanted to harm him. He packed up his tools and left.The three returned to Room 306.Shao Huai asked hurriedly: "Could the murderer be Zhao Chunmei?""It's unlikely," Jinchen said. "Engineer Song was stabbed in the heart and died on Tuesday night, but there was almost no sign of struggle, which doesn't match his vigilance against Zhao Chunmei... Either we have too little evidence and our inference is wrong.""There's something wrong with what Engineer Song said." Xie Guan frowned. "The power box is next to the stairs, half a corridor away from 505. Repairing the box will cut off the power to the entire floor. How did he see the door open?"Shao Huai stood up and opened the door to try. "I really can't see it. This door opens inwards. If you're a little further away, you can't see it.""Damn it, why would Uncle Song lie?"Having deduced this, the clues that seemed to be somewhat clear just now became confusing again.As if it was some kind of habit, Shao Huai and Xie Guan both looked at Jinchen.Jinchen leaned on the sofa, fiddling with the box of mints, opening and closing it.Click click click.After waiting for more than ten seconds, Jinchen suddenly stopped and looked at them."I'm hungry, do you want to eat?"Xie Guan: “…”Shao Huai: “…”Jinchen put his watch in front of them and said, "It's almost eleven o'clock. I haven't had breakfast. I'm very hungry."Although very hungry, Jinchen still had to cook for himself and forced Xie Guan to stay.The kitchen and living room in the house were not separated. While Jinchen was cooking, he heard Xie Guan and Shao Huai chatting.Mainly, Shao Huai was chatting one-sidedly, and he had to hold back and not bring the topic back to two years ago.Occasionally, when someone accidentally mentioned a sentence or two, Xie Guan pretended not to hear it and found a notebook to write and draw on the paper.Xie Guan was recording, using a special code that only he knew.Until the notebook was suddenly taken away, then rolled up by a slender hand and hit on his forehead."It's time to eat, Xie Guan."Xie Guan: “…”He raised his eyelids, but Jinchen spoke the curse words before he could finish his words.Jinchen saw the graffiti on the notebook and laughed: "Why don't you go ask the girl on the sixth floor for advice."Xie Guan frowned in confusion, "What?"Jinchen stuffed the bowl and chopsticks into his hands, "Essentials of pencil drawing for elementary school students."He clenched his hand holding the bowl and used a lot of patience to avoid smashing the bowl on Jinchen's head.Jinchen blocked his hand and clinked glasses with a smile, "Cheers, long time no see."Xie Guan paused, looked into Jinchen's eyes and saw a mischievous smile. He tilted his head back and drank the lemonade. The gloom between his brows seemed to dissipate a little.Just after dinner was halfway through, there was a hurried knock on the door of Room 306. The person knocking was obviously very anxious, and if you listened carefully, you could hear a few suppressed cries.