Xie Guan casually stuffed the paper and pen into the cabinet, and was suddenly grabbed by Jinchen's arm."What for?" Xie Guan's mouth was coldly tense."What happened to your hand?"Jinchen didn't wait for him to shake him off and rolled up his sleeves.There is a red mark on the forearm, as if it was burned, and the angle is even a bit tricky.Xie Guan frowned and tried to pull his hand away, but failed. He could only watch as Jinchen touched the red flesh with his fingertips.There was still a slight stinging sensation when he touched it. Xie Guan shuddered instinctively and couldn't help but grit his teeth, his voice becoming even colder."...Jinchen."He seemed really angry, even more prickly than when he was choking.The prickly Xie Guan was pulled by Jinchen and stretched his arm under the running faucet.Jin Chen noticed that Xie Guan was about to struggle, so he calmly grabbed his shoulders from behind and said, "Don't move. If you move again, I'll strip you naked and put you in the bathroom to flush the water."Xie Guan: “…”Shao Huai, who was sitting on the sofa: "..."He wiped his face and pretended he didn't hear it."How did you get hurt?" Jinchen's tone softened a little, and he lowered his head and asked Xie Guan.He still had his arms around Xie Guan, but the posture was a little too close. Xie Guan subconsciously tilted his head and focused his eyes on the raindrops on the window."I got burned while cooking." Xie Guan said casually.Jinchen raised his eyebrows, glanced around the kitchen, and thought to himself that this was nonsense.It looks like it hasn't been fired for half a month.He didn't expose it.Jinchen pulled out a towel, wet it, and covered Xie Guan's arm with it, then turned on the faucet.The three of them sat back in the living room in silence."I still can't accept that time goes backwards." Shao Huai took a big gulp of tea.Jinchen gave them time to adapt, occasionally making a few jokes during the period.About half an hour passed.Xie Guan suddenly thought of something and said seriously, "What time is it now?"Jinchen turned around and looked at Shao Huai, who said, "It's past 9:15. What's wrong?""The deceased... is Engineer Song. He came to the third floor on Tuesday morning to repair the corridor lights."Just as Xie Guan finished speaking, footsteps were heard outside the house, which was not very soundproof, and the sound of tools being dragged on the ground.The three of them exchanged glances."Let's go out and take a look." Jinchen took out a mint candy from his pocket and put it in Xie Guan's palm, and then peeled one and put it in his mouth.Xie Guan lowered his eyes and looked at it, but still put it into his pocket.in the corridor.Engineer Song stood on the triangular ladder, his faded work pants were worn white at the knees, the tool bag around his waist was heavy, and the sound of wrenches and screwdrivers colliding was particularly crisp in the corridor.When the ladder swayed slightly, he subconsciously held onto the wall. The cigarette butt between his fingertips burned a small hole in the wall, which he quickly put out.Seeing with his own eyes that the person who had become a corpse stood up alive again, Shao Huai still felt a sense of unreality and could not help but hiss, which happened to attract the attention of Song Gong."Hey, Xiao Xie. Didn't you go to the convenience store today?"Mr. Song smiled at Xie Guan, and the wrinkles at the corners of his eyes showed signs of years of wind and sun.Xie Guan leaned against the door frame, his fingers unconsciously rubbing the coins in his pocket, and said in a cold voice: "It's not my turn today."Jinchen glanced sideways at Xie Guan.Shao Huai stepped forward quickly and held onto the shaky ladder: "Uncle, let me help you hold on."When he raised his head, his eyes swept over the back of Mr. Song's neck. There were no marks of strangulation yet, and his skin was tanned, in stark contrast to the body found on the sixth floor yesterday.Jinchen leaned against the wall, the mint candy swirled around the tip of his tongue, his eyes fixed on a piece of steel wire sticking out from the edge of the tool bag on Song Gong's waist. "Yes, we are college students living nearby, and we are just in our sophomore year." Shao Huai and Song Gong chatted casually."Uncle, your skills are amazing. Can you repair anything?"Engineer Song lowered his head to screw in the light bulb and turned the wrench on the screw a few times: "Yes, water and electricity pipes, door and window locks, and even old clocks can be repaired."There was a hint of pride in his tone, but also a hint of shyness, "It's just that this building is old, and some places are difficult to repair."Jinchen suddenly interrupted: "Uncle, what are you using this steel wire for?"Engineer Song looked down and smiled, "Oh, this is used to fix the joints when repairing water pipes. Sometimes it is also used to clean the sewers."Shao Huai tightened his hands holding the ladder slightly. The marks found on his body yesterday were caused by this kind of steel wire.What does this mean? Did the murderer use local materials or specifically use the victim's things to kill him?Shao Huai couldn't figure it out, so he went to see Jinchen again.Jinchen chewed mint candy and said in a vague voice, "Uncle Song, your job is very hard, right?"Engineer Song tightened the last screw, stepped down from the ladder, and brushed the dust off his trouser legs."I'm used to it. It's hard work in this line of work."He packed up his tool kit and nodded to the three of them, "I'm going to go to the fifth floor first. There's a tenant's water pipe there that needs repairing."Watching Song Gong's back disappear around the corner of the stairs, Shao Huai asked in a low voice: "Should we remind him, or just follow him?"Jinchen shook his head, "Don't worry, it's still early."Shao Huai sighed, "I think this uncle is a good guy. He charges cheap fees for helping people with repairs. He is cheerful, so why was he killed?"Xie Guan's expression became even more gloomy. The edge of the coin in his pocket was pinched between his fingertips, causing some pain. "It may not be as good as you say."Jin Chen had just noticed that Xie Guan seemed to be in a bad mood, so he tilted his head to look at him and jokingly asked, "Why, did I bully you?"Xie Guan frowned slightly but didn't respond.He was thinking back to the previous collision.Jin Chen looked serious when he saw this, "Xie Guan, did he really bully you?"“…No.” Xie Guan came back to his senses, finally let go of the coin, took his hand out of his pocket, and let it hang naturally.He had no expression, but the coldness and gloom on his fair face could not be dispelled."That's good." Jin Chen raised his hand and touched his hair, smiling casually, making it hard to tell whether it was a joke or the truth. "Tell me if anyone bullies you, okay."Hearing this, Xie Guan paused, his breathing became noticeably heavier for a moment, and then he changed the subject."Then you might as well beat yourself up first.""Tsk, such a big temper."Jin Chen stretched out his hand and hooked his fingertips with Xie Guan’s, as if they were holding hands. “I’m serious, Xie Guan.”This tone made Xie Guan feel a little at a loss.At least I haven't heard of it in the past two years.Some other emotion bubbled up from my chest and it took a while to suppress it.Xie Guan rarely refuted Jin Chen's words. He felt the warmth on his fingertips and pulled back as if he was burned.He looked into Jinchen's smiling peach blossom eyes, tilted his head, took a deep breath, and his gaze fell on the mottled wall."Shao Huai has gone upstairs to check on the situation, why aren't you going?"This is an idiot who talks a lot.[The detection of the villain triggers the heartbeat value, the heartbeat value is +3, and the total is 3! 】"Go ahead, let's go."Jinchen took advantage of the situation and held his hand tighter, leading him upstairs.Xie Guan: “…”When did he say he would follow?