Red is the color with the longest wavelength and the most colorful sense in the visible spectrum, while black is just the opposite. The combination of these two colors can produce a special visual effect.

The black house is like the night, and the red man is like blood. The two are integrated into one, making people feel very depressed.

"This child likes to daydream and draw when he has nothing to do. He never goes out to play and always locks himself in his room." The thin dark woman came in at some point, holding two glasses of water. "I don't want anything else now. I just hope he can grow up happily like a normal child."

The woman handed one of the glasses of water to Chen Ge and placed the other glass of water next to the boy: "Let's go out and talk. He is afraid of strangers."

"Okay." Chen Ge returned to the living room with the cup of water. The thin dark woman sat opposite him.

"Do you have anything else to ask?" The woman seemed a little reserved.

"Fan Yu does look quite pitiful. I think he must have been stimulated by something. If we want to cure his illness, we must find out the root cause and then prescribe the right medicine." Chen Ge said what he was thinking: "You are his only relative. I can see that you love him very much. Can I ask you a few more questions?"

The thin, dark woman nodded. Perhaps because the weather was too hot, beads of sweat appeared on her forehead.

"You said before that Fan Yu's parents disappeared because they were looking for him. Then where was Fan Yu found later?"

"Muyang Middle School, he's hiding in my brother's office."

"It's Muyang Middle School again. It seems like there are always incidents at that school."

"Who said it wasn't?" The thin dark woman sighed softly, "Muyang is the worst school in Jiujiang. I don't even know what the meaning of this school is. There were always incidents in the past, fights and brawls, and even the police were alerted."

"So serious?" Chen Ge listened carefully. The thin dark woman's personal experience was much more convenient than searching on the Internet.

"There are worse things." The thin dark woman stood up and looked very serious. "That school is not clean. I heard from the old people nearby that the original site of the school seemed to be a crematorium, but it was demolished a long time ago due to city planning. But think about it, if a school is built there, it might attract some strange things. I also advised my brother at the time, but he just wouldn't listen."

"Why does your brother insist on becoming a teacher at Muyang Middle School?"

"The salary was high, and he had made mistakes before, so it was not easy for him to find a job. He wanted to make money, but he ended up hurting his sister-in-law as well."

"Has he made a mistake? Has he ever made an enemy with anyone? Could his disappearance be caused by his enemy?" Chen Ge immediately noticed the details in the woman's words.

"No, my brother likes to drink, but his drinking behavior is terrible. He repeatedly made mistakes due to drinking, and was later expelled from his school. He also had a bad record in his file. There are only so many schools in Jiangcheng, and everyone knows who has done what, so it is difficult for him to find a job."

"It doesn't look like a vendetta."

"Definitely not."

The woman's words made Chen Ge narrow his eyes: "How can you be so sure?"

"I won't hide it from you." The woman took out a photo from the innermost part of the drawer and placed it on the table. "Since the establishment of Muyang Middle School, there has been a classroom with locked front and back doors, prohibiting students from entering. No one knows the reason except the old principal. After the old principal passed away, this became an unsolved mystery. There are many legends about that classroom in the school, such as ghosts from the crematorium taking classes in it, and workers were killed in the unfinished classroom when the school was built. In short, it is a very ominous place."

"But what does this have to do with your brother's disappearance?" Chen Ge still didn't quite understand.

“Look at this photo.”

Chen Ge took the photo from the woman. It was a very strange group photo.

An obviously drunk man sat dazed in the middle, with several rows of students standing tall and short around him.

If you just look at these, it feels like an ordinary graduation photo, but the problem is that all the students are standing with their backs to the camera!

And if you look closely, you can see that every student's standing posture is very strange, as if they are all standing on tiptoe.

"Where did you get this photo? Have the police seen it?" Chen Ge placed the photo on the table and wiped the sweat from his palms.

"The night before he disappeared, he stayed up all night drinking and watching football games with his friends. Afterwards, in order not to miss classes, he ran straight to school in a daze. It was still dark, and he thought of going to the infirmary to take a nap first. When he passed a classroom, he saw a lot of people standing inside. He wondered which class was so diligent, and stopped at the door for a while. The people in that class seemed to be preparing to take a group photo, and when they saw him, they took the initiative to invite him to sit in the middle. After taking the photo, the students left, and in the end, no one knew who gave him the photo." The thin dark woman spoke in a calm voice, but the story she told was shocking.

"After my brother saw the photo, he noticed that everyone had their backs to the camera, and he sobered up. Only then did he realize that he was sitting at the door of the closed classroom." The dark and thin woman pushed the photo towards Chen Ge. "He only told my sister-in-law and me about this. He thought it would be fine after a while, but who knew that something unfortunate happened that night. Xiao Yu got lost, and the two of them went out to look for him, but they all disappeared. So I think his disappearance was not a vendetta, but was related to the closed classroom."

"What did the police say?" Chen Ge pushed the photo back.

"They took the photos to Muyang Middle School to conduct an investigation. Although the students in the photos were all wearing Muyang Middle School uniforms, there were no such people in the school. Later, they opened the sealed classroom and searched it inside and out. They only found my brother's shoe prints. It is certain that my brother did enter the classroom that day." The thin dark woman spoke more and more weirdly.

"Okay, I understand." Chen Ge asked the woman a few more questions. She didn't know some of the questions, so she just gave vague answers.

After making sure that he couldn't get any new information out of him, Chen Ge stood up and prepared to leave.

"Are you leaving? It's so hot outside, why don't you drink some water before you go?"

"No thanks." Chen Ge declined the woman's kindness and left the two-story building with his phone.

After talking with the woman, Chen Ge had a more comprehensive understanding of Muyang Middle School: "Muyang Middle School has a total of four side quests, two of which are related to the boy's family."

He took out Fan Yu's painting from his pocket and looked at it again. The black and red colors seemed to be trying to express something: "The black house and the red little man, is there any connection between this and Muyang Middle School? Could the pattern in the painting be a building at Muyang Middle School?"

(.=)