The world is big, but the senior high school students are the biggest.

Jian Jingcai and Ji Yunyun parted ways, and immediately called Ji Feng to come out.

There was a strong male voice on the other end of the phone, "We must do our best... to maintain public order..." It was probably a lecture or training.

Ji Feng's voice was very low, like a thief: "What are you doing in a meeting?"

Jian Jing explained the whole story.

"Fuck!" He cursed, "Send me the location, right away."

It took half an hour right away, and considering his usual situation, this was unprecedented efficiency.

"What the hell?" Ji Feng started complaining as soon as he sat down. "The college entrance examination is coming soon. What is she thinking about?"

"She knew you would say that, so she would rather investigate it herself than ask you for help." Jian Jing held the iced coffee and slowly said to him, "Brother, you think so, tut tut tut."

Ji Feng rolled his eyes and calmed down: "What case?"

"If you are busy, just make a phone call for me." Jian Jing deliberately said, "I can investigate it alone."

Ji Feng did not respond and asked directly: "Do you think it is murder?"

"Not necessarily, but if we don't investigate, she will definitely be worried. The college entrance examination is coming soon. We can't keep thinking about it." Jian Jing took a sip of coffee and asked, "Are you coming? If not, lend me the file to take a look."

"Nonsense." Ji Feng's answer was not surprising, "Go to school tomorrow, I will pick you up."

"I don't want to go with you." Jian Jing refused. "I have my own way."

Ji Feng looked at her: "What are you planning?" "

I won't tell you."

The next day, Monday.

Nothing happened.

The atmosphere in Senior 3 (5) was as depressing as ever.

Ji Yunyun sat in the second to last row, and from time to time she looked at an empty seat in the third row. That was Miao Tong's seat. Her desk was empty. The books that used to be filled with notes, the piles of test papers, and the colorful stationery were all gone.

But when the desks in the classroom were all filled, such an empty space was particularly noticeable.

Ji Yunyun believed that she was not the only one staring at that desk.

It was as if she was not the only one who had doubts about Miao Tong's death.

She pressed the button of the fountain pen unconsciously, click, click, click. The boy sitting next to her raised his elbow and touched her arm: "You are so noisy."

Ji Yunyun ignored him.

"Why are you staring at the monitor?" The boy sitting next to her asked.

"It's none of your business." Ji Yunyun pushed him away, took the test paper, and forced herself to concentrate on the math problems.

Math is so damn hard!

When will Teacher Jian start the investigation?

And my stinky brother will definitely be scolded again, but as long as I can find out the truth, I will just say it.

What if Miao Tong really didn't commit suicide?

Oh, so annoying.

She was thinking about it all day and didn't finish the test paper. She had to go back to the dormitory and continue working with a flashlight.

There were several times when Ji Yunyun almost couldn't control herself and wanted to send a few messages to someone, but she held back.

On the third day, Tuesday, she went to class with dark circles under her eyes.

During the second class, the math teacher came over and said, "Switch from the music class in the afternoon. This class is about safety education. Everyone line up to go to the auditorium."

Ji Yunyun's heart moved and she looked at Xiaoxiao.

The two good friends silently held hands.

The classmates were not surprised. Someone jumped off the building, and the school must do something, psychological counseling, safety education, parent-teacher meetings... Only some people whispered.

"Another waste of class."

"Boring."

"It's better to waste time and give us physical education classes."

But complaining was useless. The school was very strict, and all the more than 30 classes in the senior class were there.

Ji Yunyun sat down and saw her brother on the podium silently glaring at her. You glare at me, glaring at me will cost you a lot of meat." She complained in her heart and glared back viciously.

The two girls in the back row were excited: "Wow, is that a police officer? So handsome."

Ji Yunyun: Apart from being handsome, there is nothing good about him.

Girl: "The uniform is tempting!"

Ji Yunyun: The quality is so poor, and if you break it, you have to sew the buttons yourself.

Girl: "I wonder if he has a girlfriend."

Ji Yunyun: Of course not.

After complaining about it, for some reason, Ji Yunyun's heart gradually calmed down, and the anxiety lingering in her limbs also subsided quickly.

Slowly, she calmed down.

The safety education was hosted by a beautiful and sweet young lady. She was from the public security brigade and was responsible for providing safety education to schools and communities.

The lecture was not long, and the main theme was "Cherish life and study hard", and the students were drowsy listening to it.

Half an hour later, the lecture was over and everyone went back to their classes.

Ji Yunyun was swept by the crowd and returned to the classroom for English class.

But she knew that things were not over yet.

"I owe you a favor, and this time I have finally repaid it." The young lady from the security brigade put her hands on her hips, "I am working overtime temporarily. Do you know how late I stayed up last night?"

"Okay, okay, thank you." Ji Feng said, "I will treat you to dinner another day."

"Someday means there will be no next time." She said, "Today at noon, treat me to dinner."

Ji Feng: "The cafeteria?"

The young lady: "Invite the girls to the cafeteria for dinner?"

"Isn't there only a cafeteria in the school?" He packed up the materials, "Otherwise, let's do it another day. I still have something to check."

The young lady: "..."

The two were about to leave when they suddenly saw the school workers carrying in billboards, roll-up banners, posters, and several boxes of new books from outside.

"Ah! Teacher Jian's lecture?" The girl stopped and asked the janitor, "Is it today?"

"It's next class." The school worker said, "It's just for the first and second year students.

" The young lady didn't leave, and said to Ji Feng: "If you want to eat in the cafeteria, eat in the cafeteria. I'll go back after eating."

Ji Feng: "For Teacher Jian's autograph?"

"There are very few autographed copies, and even fewer special autographs. It's a rare opportunity. Teacher Jian rarely holds autograph sessions." The young lady calculated happily, and her anger from getting up early to rush to work had dissipated.

Ji Feng couldn't understand the enthusiasm of the star chaser, shook his head, and retreated.

The experimental building is on the other side of the auditorium, and its height is about the same as the teaching building, with a total of four floors. In the back are the basketball court and badminton court, and in the front is the office building.

The details are as follows:

Girls' dormitory.............. Boys' dormitory

.. Canteen........ Gymnasium..... Stadium.

Teaching building A..... Playground...... Stadium.

Teaching building B..... Auditorium.... Laboratory building

Teaching building C.............. Office building

The classroom of senior 3 (5) class is in building A, and it was a physical education self-study class at the time of the crime. It is indeed unreasonable that Miao Tong rushed all the way from building A to the laboratory building to commit suicide.

But there is evidence to determine that this case was a suicide.

The colleagues who conducted the investigation last time have recorded all the witnesses or indirect witnesses.

No one saw Miao Tong jump, but no suspicious person was seen entering or leaving.

At the time of the crime, there were a total of six people in the laboratory building.

The chemistry teacher who was preparing for the next class, the cleaner who was sweeping the ground floor, and four high school sophomores who were preparing for a chemistry competition in the laboratory.

There were two entrances and exits to the laboratory building, one on the left and one on the right.

The cleaner was mopping the left side of the first floor. According to him, he heard footsteps once, about ten minutes before the incident.

After that, until Miao Tong jumped down, he was nearby, never left, and never heard or saw a second person coming in or out.

Near the right entrance and exit, there is a quiet and narrow path, which is connected to the office building in front by a corridor, and there are usually few people.

Two students from Class 5 were memorizing words there, and they said that they had never seen anyone coming in or out.

In addition, behind the experimental building is the badminton court, where Ji Yunyun and her classmates are.

They said that they had seen Miao Tong going in the direction of the experimental building, but they thought she was going to the toilet - the toilets in the gymnasium and the teaching building were too far away, so they didn't take it seriously. They

didn't see other people coming in and out.

Therefore, we can mark out the topographic map like this.

.....Girls playing badminton......

.........Experimental building..........

..Cleaners..First floor...Word students.

Look at the five people in the building.

The four high school sophomores who participated in the chemistry competition were both boys and girls. They didn't know Miao Tong at all, and they stayed in the classroom doing experiments, so they were not suspicious.

The teacher who prepared for the chemistry class was newly hired this year. He taught the first year of high school and had never taught Miao Tong. He didn't even know this student and had no motive to kill.

In addition, although the crime scene had accumulated dust because it rained the day before and was washed clean by the rain, and no footprints or other traces were left when the sun shone the next day, there was nothing special to note.

In this case, it is reasonable to conclude that Miao Tong committed suicide.

But if he killed her... Ji Feng was thinking, when he suddenly heard a burst of cheers from the auditorium next door. The huge noise made by hundreds of people together seemed to be able to blow off the ceiling.

"Tsk, the writer is like a star." He muttered to himself, walked to the fourth floor, and went to the rooftop.

There is a door between the rooftop and the staircase, which has now been replaced by a large lock, but in the photo in the file, it is an ordinary small lock.

The key, along with other keys to the laboratory, is put on a large keychain and kept by a teacher in the office building.

However, the lock at the scene has been broken, and it is unknown who did it. After all, if there is nothing to do, no one will run to the rooftop.

Ji Feng scrolled through the file to the bottom and found that there was no mention of the two people that Ji Yunyun cared about.

Xiao Xiao's roommate, a girl with a guilty conscience and neuroticism, Tong Moli

The monitor of the senior three (5) class, a boy who is suspected to be the deceased's ex-boyfriend and a competitor for the recommendation, Wu Jingcheng

He decided to ask their class teacher.

Passing by the auditorium, he could clearly hear the children screaming in surprise.

Ji Feng remembered that when he was an intern, he was assigned to be in charge of a star's concert. That night, the gymnasium was like this, and the noise hurt his ears.

He admitted that Teacher Jian was smart, beautiful and talented, but it shouldn't be like this, right?

"Ahhh——" Here it comes again, the kids don't know shit.

Ji Feng hurried into the teaching building, but before he even reached the head teacher's office, he heard the students' protest: "Why can the first and second year students go, but we can't?"

"Yes, we want autographs too." The girls pleaded, "Teacher, please be flexible." Those who

dared to make requests in the office were all the teachers' favorites and the top ten students. Teachers were usually willing to listen to their opinions.

Considering the previous suicide incident, the teachers thought it would distract the students, but they still said, "How about this, I'll ask if I can spare a class in the afternoon to sign autographs for everyone, but the premise is that you can't delay your studies."

"Yeah!" The students cheered.

The children came out in droves.

Ji Feng knocked on the door and asked politely, "Teacher Chen, can I take up a moment of your time?"