Chen Ge's initial plan was to find Ying Tong, but judging from the clues he has now, he may need to find A Ying, A Mu, Atong and Ying Tong.

"Yingchen knew about the existence of the three Amu brothers. It can even be said that the appearance of these three children is related to him. He personally created these three tragedies."

"The three children suffered from three different mental illnesses. These three illnesses were probably forced upon them by Yingchen. They correspond to sharp weapons, imprisonment, and shock, respectively."

"He asked the 'corpse' to take care of the three children. In reality, he hid the corpse in his home. Ying Tong lived with the corpse for a long time, which led to the development of three stressful personalities."

"This can also explain why these three children are unable to leave the house, and only Ying Tong keeps choosing to flee."

"Another point to note is that Amu is not blind, but he is only six years old. If my previous analysis is correct, Amu is one of Ying Tong's stressful personalities. This can also indirectly prove that Ying Tong was not blind before the age of six, at least not completely blind."

The more he analyzed, the more horrified Chen Ge felt. He took a deep breath and asked towards the living room, "Ms. Skirt, are you still there? Can you tell me when Ying Tong ran away from home for the first time?"

"It was a long time ago, about five years ago. At that time, Yingchen's relatives had just moved away, and only Yingchen and Yingtong were left at home." The lady in the skirt revealed another very important information.

"Ying Tong ran away from home just after the relatives moved away. Don't you think there is a problem? How could Ying Tong run away for no reason? His brother Ying Chen must have done something bad to scare his brother Ying Tong." Chen Ge couldn't see the expression of the lady in the skirt, and didn't know whether she agreed with him. "Think about one more thing. Amu's age is the same as Ying Tong's when he ran away from home. Amu suffers from a phobia of sharp weapons. After Ying Tong ran away from home and was found by Ying Chen, nails were nailed near his eyes. Aren't nails sharp weapons? When Amu sees a sharp weapon, doesn't he always imagine that someone wants to blind his eyes with a sharp weapon?"

"What exactly do you want to say?"

"Amu was Ying Tong at that time. The reason why he suffers from sharp weapon phobia is because Ying Chen had done something similar to Ying Tong. That's why he is afraid of sharp objects. This is the cause of his illness!" The world behind the door is absurd and weird, and many times it is impossible to explain logic. However, when combined with the memories of the person who pushed the door in reality, it will be found that under all the absurd appearance lies a scarred heart in reality.

In order to convince the lady in the skirt, Chen Ge told her all his inferences and guesses: "If you don't believe me, you can take me to see A Tong and A Ying. The experiences of these three children combined together are the injuries that Ying Tong had suffered."

"I still can't understand. Amu is a living person, an independent existence. How can he represent the memory of Yingtong at a certain age?" As a native of the world behind the door, the lady in the skirt herself is woven according to Yingtong's memory. The meaning of her existence is to take care of Yingtong, accompany Yingtong, and be Yingtong's friend.

"You will understand this problem after you find Ying Tong. Although he is disfigured and blind, he has no problem communicating with people normally." Chen Ge sighed, "You have never listened carefully to the voice of that child. Those words that sounded incomprehensible to you were actually him asking for help. Tragedy will not repeat itself, but it's a pity that all of you have been deceived by Ying Chen. The kindness and enthusiasm you saw were all pretended by that bastard. His true appearance will make all of you feel sick."

The residents in the building all think that Yingchen is a very nice person and that Yingtong is a burden. In fact, this is exactly what Yingchen deliberately created.

Because they believed in the minister, most of the residents turned into corpses.

"I don't expect you to completely trust me, I just hope you can give me a chance to prove it." Chen Ge's attitude was very sincere. He had no other choice. Ying Tong's world behind the door was the most difficult world behind the door he had ever experienced. He had to try his best to seize every opportunity. Only in this way could he find a possible way out in the cracks.

The room fell silent for a long time. After a while, the lady in the skirt said, "How do you want to prove it? Let me help you find Ying Tong?"

"At least before you find Ying Tong, don't tell Ying Chen about my affairs. Also, you must take care to protect yourself." The tenants in the building treat Ying Chen as their neighbor, but in Ying Chen's eyes, these tenants are just dolls on the stands. Once he gets tired of them, he will kill them without hesitation.

"Okay, I promise to keep your secret until you find Ying Tong. But after you find Ying Tong, if you can't prove what you just said, I will hand you over to Ying Chen."

"That's fair. It's settled." After receiving the woman's affirmative answer, Chen Ge breathed a sigh of relief. He leaned against the wall and asked, "Has Amu never left the house since he lived with you?"

"Yes, he has never gone out since Yingchen sent Amu here."

"Is this what the minister asked you to do?"

"Well, he's worried that Amu might get hurt." The lady in the skirt didn't know what Chen Ge was planning, she just told him everything she knew.

"Amu suffers from phobia of sharp objects, so it's understandable that he can't leave the hut. But what about Atong and Ying? You said before that Atong suffers from severe claustrophobia. Can't this child leave his home at will? Is it really good for a child with claustrophobia to be locked in the house all the time?" Chen Ge asked the point. The woman thought about it for a while, and she suddenly found that what Chen Ge said made sense.

"Ying Chen didn't let Amu leave the room because it was not for his own good. He just wanted to hide him and prevent him from being found by Ying Tong." Chen Ge searched for a long time and finally found a chair and sat on it: "Amu is a part of Ying Tong. I suspect that after Ying Tong finds Amu, some changes will happen to him."

Ying Tong didn't dare to open his eyes because he had to be a blind man, otherwise he would die or his eyes would be blinded, so Amu appeared.

If Yingtong behind the door were allowed to find Amu, Yingtong would most likely regain some of his vision.

More importantly, as an outsider, Chen Ge experienced Ying Tong's most desperate experience. If Ying Tong's condition could improve, he should also be able to gain great benefits.

"I discovered the problem as early as when I was pushed down the stairs by the children. They didn't say that I was blind, they were just curious about why I kept my eyes closed. At that moment, I was wondering if Ying Tong was really blind. I didn't expect that my guess was almost right. Ying Tong is probably not completely blind, he just doesn't dare to open his eyes. I must help Ying Tong get out of despair and try to open his eyes."

Chen Ge's tone was firm. He had never wanted to help someone so much before. Some pains could only be felt after experiencing them. Chen Ge was experiencing this now.

He must walk out of the door alive, save Ying Tong in reality, and then make Ying Chen receive the punishment he deserves.

Chen Ge's voice was gentle yet powerful, with a kind of determination that he would never back down. The woman in the room also had a much better impression of Chen Ge: "I'll take you to Mr. Mu first, but he's not as easy to talk to as I am. He's a stubborn person."

"Thank you very much."

"No need to thank me, I'm just curious about what you said." The lady in the skirt was a very nice girl. She opened the security door and grabbed Chen Ge's arm: "Mr. Mu lives on Tuesday, let's go upstairs first."

"Live on Tuesday?" Chen Ge stopped and asked, "What do you mean by live on Tuesday?"

"You can think of it as the second floor. The first floor is Monday, the second floor is Tuesday, and there are seven floors corresponding to the seven days of the week." The lady in the skirt was careless and did not talk much with Chen Ge about this issue. She helped Chen Ge into the corridor.

"The floor number is the date, and the date may represent the date of death." Chen Ge felt the cold wind blowing from all directions. He felt extremely insecure now: "Ms. Skirt, can you promise me something later?"

"What's up?"

"If something unexpected happens, just run in the direction I tell you to take me. Don't ask anything and don't say anything."

"OK."

Maybe Yingchen had not yet finished dealing with the body, so Chen Ge and the lady in the skirt did not encounter him. They smoothly came to the third room on the second floor near the stairs on the left.

There was a light knock on the door and the lady in the skirt called out Atong's name softly. After a while, the security door opened.

"Didn't you just come to get the medicine? Why are you here again?" The voice that spoke was that of a middle-aged man. He spoke in a flat tone, as if he was not interested in anything.

"I have something to ask you." The lady in the skirt supported Chen Ge behind her and walked into the house.

"blind?"

"He just told me a story, which I found quite interesting. Do you want to listen to it?" The lady in the skirt asked Chen Ge to sit on the sofa, but Chen Ge was concerned about closing the security door quickly.

"Can I listen too?" Another voice came from inside the house. This voice was 80% similar to Amu's voice. If we judge only by the voice, Amu seemed to be a child of four or five years old, then the owner of this voice should be seven or eight years old.

The tone is not so childish and sounds much softer.

"Are you Atong?" Chen Ge looked towards the source of the voice. Of course, it was pitch black in front of him and he could not see anything.

"Well, do you know me?"

"Not only do I know you, I also know your father and mother." Chen Ge smiled and said, "I want to talk to Mr. Wood and Ms. Skirt about something. Can you go back to your room first?"

"Okay." The boy was very well behaved.

Chen Ge listened to the footsteps. After the boy walked away, he whispered to the lady in the skirt, "Close the door. It's not good for him to hear some of the things now."

"It's impossible. The child suffers from claustrophobia. I took down all the doors in the house and left only one anti-theft door in the living room." Mr. Mu seemed to think that Chen Ge was a liar and his attitude towards Chen Ge was not very friendly.

"It's okay, let's leave it at that." Chen Ge repeated to Mr. Mu what he had said to the lady in the skirt.

After hearing everything, Mr. Mu did not reply immediately. He thought for a long time, and finally Atong ran out.

The child also heard Chen Ge's story. He felt a little sympathetic towards Ying Tong in the story and instinctively begged Mr. Mu to help Ying Tong.

"I still can't completely believe you. What you hear is not as good as what you see." Mr. Mu is a good person, but he has an old-fashioned personality.

"What you see with your eyes may just be what others deliberately want you to see. His true appearance has long been rotten under the beautiful appearance."

In order to convince Mr. Mu, Chen Ge said one more thing: "There is a middle-aged man living on the fourth floor. Ying Chen killed him not long ago. I can walk around the building without restraint because I know he is disposing of the body on the fourth floor."

"I still think it's impossible unless you let me see the body."

"There is a headless corpse hidden under Yingchen's bed. If you don't believe it, you can go and see it, but I advise you not to do so. Once you see the corpse, you will be the next one to be killed by Yingchen." Chen Ge must win the trust of Mr. Mu. If the other party does not listen to him, it is likely that his existence will be exposed, and the situation will then get out of control.

Chen Ge didn't seem to be lying, and with Atong talking beside him, Mr. Mu finally decided to cooperate with Chen Ge temporarily and look for Ying Tong together.

"No matter what, don't tell Ying Chen about my existence, let alone tell him that someone is helping Ying Tong. You should also stay the same as before and give Ying Chen the illusion that the whole world is isolating Ying Tong. Only in this way can we all survive."

After explaining everything, Chen Ge prepared to leave. He wanted to hurry to find Miss Hong.

"When Atong and Amu are not sick, they are just like ordinary children. I even think they are more sensible and lovely than ordinary children." Chen Ge sighed, and then, with the help of the lady in the skirt, he walked into the corridor on the left: "Which floor does Miss Hong live on?"

"Saturday."

"Sixth floor?" Chen Ge frowned. This world behind the door was the one where he frowned the most. "Ying Chen might be dealing with the body on the fourth floor. We have to pass through the fourth floor to go to the sixth floor. It would be bad if he finds us. Besides, the sixth floor and the seventh floor are very close."

His heart was pounding, and Chen Ge felt like he was walking a tightrope on a cliff.

Stepping into the corridor, Chen Ge and the lady in the skirt quickly arrived at the third floor. When they were about to go to the fourth floor, a faint cat's cry suddenly sounded.

"Stop!" Chen Ge grabbed the lady in the skirt with his backhand: "Yingchen is on the fourth floor."

"How did you know?" the lady in the skirt asked in a low voice, but Chen Ge did not answer.

He held his breath and listened to the cat's meow. What surprised him was that the cat's meow neither became louder nor softer, as if Yingchen had been standing in the same position.

"What is he doing?" Chen Ge leaned against the wall. "Is he hiding in a room with a weapon in his hand, waiting to suddenly appear when someone passes by?"

Chen Ge signaled the lady in the skirt not to speak. He carefully went to the fourth floor, and the cat's meowing remained unchanged.

"Could it be that the bastard has realized that I have the means to predict his location? Is he currently conducting some kind of experiment?"

The more he thought about it, the more uneasy he felt. Chen Ge pointed towards the fourth floor and said, "Ms. in the skirt, can you help me see if Yingchen is standing in the corridor?"

"No, there's no one in the corridor."

"Okay, then let's go to the sixth floor first." Chen Ge pointed above his head. He didn't dare to stay here for long. He planned to go to the sixth floor to find Miss Hong first.