The woman in the photo is not wearing any makeup and looks like she has just recovered from a serious illness, giving people a special sense of beauty.

As early as when he was sorting things out in Haiming Apartment, Chen Ge had lamented that Men Nan's father was ungrateful. He had such a beautiful wife, but still chose to live separately. Now he finally understood the reason.

Chen Ge looked away and looked at the shy little boy in the photo.

"Is this child really Men Nan? How come a child who showed all kinds of abnormalities when he was a baby can't even deal with a mirror ghost when he grows up? Is it because some of his body functions have deteriorated as he grows older?"

There is indeed a similar saying in life. When children are very young, they can see all kinds of strange things. When they grow up, not only do they return to normal, but they also forget all the memories of that time.

"It shouldn't be that simple." Chen Ge remembered what Dr. Gao said to him before he came. After in-depth testing, he found that Men Nan had three personalities.

A self-protective personality who appears in the image of a mother. This is most likely the regret after his mother's accidental death, which attached itself to Men Nan and protects him at all times.

The second personality is Men Nan's main personality. This personality grew up with Men Nan and is the normal Men Nan in the eyes of outsiders.

The third personality is hidden in the deepest part of Men Nan's body. According to what Dr. Gao said at the time, this personality has remained in Men Nan's childhood. It is unable to communicate and appears for a very short time. Whenever the third personality appears, Men Nan will show talents far beyond ordinary people.

"Could it be that the third personality that has stopped growing is the real Men Nan? What happened to him? Why did this personality appear?" Before entering the third ward, Chen Ge also read a lot of information on this subject. He knew very well that for most patients with schizophrenia, the emergence of each personality has deep reasons.

Maybe it was because of loneliness, or maybe it was out of a desire to be protected, etc. He was not sure why Men Nan's third personality appeared, but he vaguely felt that it might be related to the door in the third ward.

After putting away the photos, Chen Ge began to read the third letter.

"Every midnight or early morning, the door would appear on time, stay for about a minute, and then disappear again."

"I sealed off Ward 3. No one is allowed to approach Ward 3 at night. I also told the nurses and caregivers on duty to always keep an eye on the door that would bleed."

"Only three days later, the nurse on night duty told me that there was a strange noise coming from behind the door. She waited until the door returned to normal, then pushed it open and looked inside. Ward 3 was empty, not even a mouse."

"On the fourth day, I personally stood guard at the door. There was indeed someone moving inside, and I could vaguely hear the sound of gnawing and chewing."

"On the fifth night, the thing roaming behind the door seemed to sense something, and there was a knock on the door of Room 3."

"There was a knock on the door in an empty room. If I hadn't just completed a mental illness test a while ago, my first reaction would probably be that there was something wrong with my brain."

"I had the door sealed with wooden boards. I lived in fear for several days. On the tenth day, I heard a loud banging on the door."

"Blood flowed out, staining the entire door red. The scene was like a nightmare."

"I contacted the nurse to remove the door and called the doctor on duty to squat outside Room 3 in the middle of the night."

"On the eleventh day, at midnight, just a few seconds later, everyone present heard the sound of the door being pushed open."

"The sound came from the door of Ward 3, and there is clearly no door there."

"When the door opened, the door frame was stained red. I could see clearly that it was not blood, but something that looked like bloodshot."

"A minute later, everything returned to normal, and a doctor said he saw a dark figure crawling out of the house."

"The doctor submitted his resignation letter to me on the same day. The hospital was short of staff, so I tried to persuade him to stay, but he became extremely emotional and refused to negotiate at all."

"It's no use removing the door, so I might as well ask someone to seal it up with bricks."

"The effect was obvious in the first few days, but a week later, new problems appeared in Room 3. Every midnight or early morning, Room 3 and the walls next to it began to turn red, just like a person's skin was swollen after being hit. The red color is still spreading, and I am now very worried that it will spread to the entire hospital."

"I have tried various methods but to no avail. This ward has never had any problems before. All the anomalies started when the boy's mother was murdered. Do you think I should take the boy back? Look for the cause from him?"

After reading the third letter, Chen Ge's face was not very good. This door was much more difficult than he thought. The old dean tried various methods but failed in the end. Not only did he fail to close the door, but the situation became more and more serious.

"There should be a solution here, otherwise the rehabilitation center should have been closed more than ten years ago."

Chen Ge picked up the last letter, and his expression gradually became serious. There was an address written on the envelope of the last letter - Linjiang New District Blood Prevention Station, which was not on the other letters.

"Doctor Chen, I will do as you say. The door is closed for now."

"But I still can't figure out why Men Nan could close the door?"

"What is in the world behind the door?"

The letter was very short, and it revealed two pieces of information to Chen Ge.

First, the door can indeed be closed and it is not unsolvable; second, Mennan is the key to closing the door.

"It seems that if I want to solve the door in the toilet of my haunted house, I have to trouble Men Nan to come forward." Chen Ge looked at the end of the fourth letter: "The old dean is very interested in the world behind the door. Could the reason for his disappearance in the end be because he ran into the door?"

The hospital was closed down four or five years ago, and the director disappeared some time before the closure. There must be a certain connection between these two things.

Putting the envelope back in place, he looked at the closet and said, "I still feel something is wrong. These letters don't have stamps on them. The first three letters don't have dates or addresses written on them. It's impossible for them to be sent. How did the dean communicate with that Doctor Chen?"

"Besides, these are all letters that have been sent out. How did they end up in the dean's office?" Chen Ge narrowed his eyes slightly. He thought of several possibilities: "Could it be that the dean's surname is Chen, and he suffers from schizophrenia, and these letters were all written by him to himself? Or did Dr. Chen, who received the letters, return to the hospital after the dean disappeared, and deliberately put these letters here, hoping to use this method to use someone else's hand to remind those who come later?"

The former was due to the dean's personal reasons, but if it was the latter, then it would have a different meaning for Chen Ge.

"Who is this Doctor Chen?"

Chen Ge thought for a moment and stuffed the fourth letter with the address on it into his jacket pocket.