At six o'clock in the morning, a ray of sunshine had just pierced the sky of Shengjing, Yu Xin had already woken up early, and after dressing up, he sat on the sofa in the living room and looked at his mobile phone in a daze. Yi Yang's phone was answered as soon as she dialed it, and Yi Yang was a little surprised to hear her answer so quickly on the other side of the phone, and after a while, he agreed with Yu Xin to meet in front of the provincial library at nine o'clock.

After the two met at the provincial library, Yi Yang took Yu Xin through the rather spectacular gate, handed in the library card and went straight to the ancient book area of the library's borrowing office. Looking at Yu Xin's somewhat puzzled eyes, he explained: "In the past, when some cases were handled, they would come to check some information when they couldn't find a way, and there are many materials here that can't be found on the Internet. We came this time mainly to check the historical facts and rumors related to the Yan Kingdom during the Five Dynasties and Ten Kingdoms of our Huaxia Kingdom, and we searched separately and met here for an hour. Yi Yang pointed to a corner of the reading area. After Yu Xin nodded, the two of them went separately to look around in the library area like a vast sea of books.

An hour passed in a flash, and the two of them gathered in the corner of the borrowing office with more than a dozen books, and Yu Xin saw Yi Yang take out a book with an old cover, which was the ancient book that Jing Hongyun borrowed from Yi Yang yesterday. Yu Xin was in charge of finding the description of Yan Kingdom in each book, and Yi Yang opened the ancient book and recorded something in a notebook. Yu Xin followed Yi Yang's instructions and searched through the books. With the progress of time, Yu Xin found that the documents that Yi Yang was looking for mainly focused on the words witches, sacrifices, and guardians related to the Yan Kingdom. But looking at Yi Yang's concentrated appearance, Yu Xin didn't ask much, just pressed her curiosity and seriously cooperated to find the literature.

Three hours passed in a hurry, Yi Yang finally closed the last book, thought for a while, and suddenly asked Yu Xinfa: "If I didn't find you by the river that night, what do you think would happen to you?" Yu Xin scratched her head and replied with some hesitation: "I didn't think about it, but I was scared to death at the time, if it wasn't for you, maybe I would have gone crazy or scared to death!" ”

When Yu Xin said this sentence herself, she suddenly covered her mouth, as if she realized something.

Yi Yang looked into her eyes and nodded affirmatively, and rarely said his thoughts to Yu Xin: "The number of deaths in a third-tier city may be too large in a fixed period of time, and we have no way of finding it. However, there is no psychiatric hospital in a small city like Longcheng, and if there is a sudden mental illness, it will definitely be transferred to a nearby big city for treatment. ”

After finishing speaking, he picked up his mobile phone without waiting for Yu Xin to answer, Yu Xin remembered the dead Sun Ye and Xiang Yanwu, and suddenly felt that the danger was so close to him, and he didn't even notice when Yi Yang hung up the phone. In a trance, he found that Yi Yang greeted him several times, and hurriedly focused on looking at Yi Yang.

Yi Yang shook his head apologetically to her, and then said: "We don't have time to have lunch, now we have to rush back to Longcheng immediately, Zhou Xing is already going to the hospital to investigate the patient records, and Master Liu has already driven to pick us up." ”

After Yi Yang said these words, he hesitated for a moment and then continued: "Actually, the next thing is really not suitable for you to participate in anymore, I have solemnly recommended that you stay in Shengjing and wait by as a senior and mentor." ”

Yu Xin listened to Yi Yang's words without the slightest pause, looked at Yi Yang's eyes firmly and replied: "Senior, I also have curiosity, although I am an intern, I am also a policeman, I am afraid of danger, but I believe that you will protect me, right?" ”

Yi Yang didn't say anything, signaled Yu Xin to return the book to its place, and then hurried out of the door of the library together, and after waiting at the door for ten minutes, Master Liu drove a white police car to stop in front of the two, and pulled the two of them to drive directly in the direction of Longcheng without even taking their luggage.

On the way to the car, both of them seemed to be preoccupied, and even Master Liu, who had always been good at chatting, felt the tense atmosphere and drove attentively, and drove to Longcheng half an hour earlier than usual. After arriving in Longcheng, they went directly to the central hospital, and Zhou Xing and Xu Forensic Doctors were already waiting in front of the outpatient building.

Zhou Xing didn't bother to greet Yi Yang when he saw him, and said directly: "At present, there is only this hospital in Longcheng that is qualified to accept mental illness, and a total of 11 people have been treated after investigating the data for nearly a year, excluding patients with clear factors such as domestic violence and excessive mental pressure, only two family members cannot determine the precipitating factors." ”

Speaking of this, he paused, looked at the case in his hand, and continued: "The strange thing is that these two patients are both students of the city's No. 1 junior high school, and the two usually have no symptoms before their illness, and now they have been transferred to other cities for treatment, and the specific situation cannot be grasped for the time being."

Yi Yang thought about it after hearing this, and asked Zhou Xing, "Can you contact the family or the teacher who knows the situation more well?" ”

"I have learned about this, the parents of the two are currently accompanied by treatment in other cities, both of them are students in the same class, and they are also at school when the illness occurs, and the teacher can contact them." Zhou Xing replied immediately.

Yi Yang nodded, and then said: "Officer Zhou, you give me the teacher's contact information, please contact the school, Yu Xin and I will go over now, you don't have to go together." Yi Yang waved his hand to stop Zhou Xing's words that he was about to say, and then said: "It's not that I don't believe you, but some things are still uncertain, it's not good if there are too many people, we can keep in touch at any time." Zhou Xing nodded reluctantly and handed the information of the two students in his hand to Yi Yang. After Yi Yang took the information, he said goodbye to Zhou Xing, got out of the hospital with Yu Xin, got into Master Liu's car, and ran directly to Longcheng Junior High School.

After arriving at the place, I took out my ID and registered with the doorman, and went directly to the office of the teaching office of the first grade according to the guidance of the doorman, and came directly to a middle-aged woman who was nearly 40 years old after greeting and asking at the door.

Yi Yang showed his ID and directly expressed his intention, this middle-aged woman is the homeroom teacher of the fifth class of Longcheng Junior High School, surnamed Sun, she has just received instructions from the school leaders to know that there are police officers who want to come here to learn some information, and she was a little surprised after listening to what Yi Yang wanted to know, but she still recounted the situation she knew.

It turns out that these two girls are both natives of Longcheng and are students in the class she teaches, but these two students usually do not intersect, one student is named Xie Wanying, who can be regarded as a good student with excellent character and learning, and is still a member of the literary and art committee. Another student, Gao Nana, is a single-parent family who lacks the love of her relatives at home. Some students said that Gao Nana usually had contact with some idle unemployed young people in society.

Teacher Sun sighed when he relayed this, and continued with some self-reproach: "These two students did not see any signs before the onset of the disease, when they had just entered the summer school and had their first class in the afternoon after the lunch break, which happened to be my class. I had just stood on the podium, and before I could speak, the two of them suddenly yelled and screamed, and kept beating up the classmates around me. At that time, the classmates were frightened, and all of them scattered to the side, and the two of them scuffled with each other for a while, and when they came to the window, they were about to jump down."

Teacher Sun patted his heart very frightened and said: "Fortunately, the boys who handled it pulled the two of them down in time, our class is on the fourth floor, and if we jump, the consequences will be unimaginable." After the two of them fainted, I and the teacher next door sent them to the hospital, and there was no treatment in our Longcheng Hospital, and their family transferred them to a hospital in another city, and then called a few times to ask, and now they should still be treated. ”

Yi Yang thought for a moment and then continued to ask, "What did they say when they got sick?" Teacher Sun thought about it carefully, shook his head and said, "At that time, they were not in a clear mind, and they couldn't hear what they were shouting at all. ”

"What do you feel about the cause of the disease, and has anyone else said it? Has no one investigated? Teacher Sun lowered his head gloomily and did not speak, Yi Yang and Yu Xin glanced at each other and knew in their hearts, this kind of thing happened at school, and the responsibility must be attributed to the pressure of learning and the teacher's teaching methods, and Teacher Sun was also under a lot of pressure.

Just as Yi Yang was about to say goodbye and leave, he suddenly said, "Teacher Sun, can you show me the roster of students in our class and grade?" Teacher Sun nodded, turned around and picked up a list from the table and handed it to Yi Yang. Yi Yang looked at it carefully for a long time, returned the roster to Teacher Sun, and then said goodbye and left with Yu Xin.

After leaving the school, Yi Yang didn't say a word after the two got in the car, and after a long time, he said to Master Liu to go to the village of complaint, and then turned to Yu Xin and said: "Things may be clear tonight, but the two of us must not be separated, you don't leave me." Yu Xin nodded a little blankly.