Autumn and dusk always look a little decadent together, and if the cool breeze happens to sweep through a few dead yellow leaves, and the long hair of a woman walking through the long street is blown by the wind, it will make people feel a little depressed.

When Mr. Shen walked from the one-way wide cement trail, Cheng Mo felt that this situation was a bit bleak.

The tall sycamore looks a little hazy in the sunset, and the orange light like a small flame swayes in the shade of the trees.

In fact, Teacher Shen is also a young woman of the Buddhist family.

Fu Yuanzhuo, who was standing at the end of the corridor, was the first to speak and shouted, "Teacher Shen." ”

followed by Yan Yitong's crisp and translucent voice, and then Cheng Mo's slightly low and light voice.

Just when Shen Youyi tilted his head slightly and smiled at Cheng Mo and the others, Director Wu of the Security Department spoke: "Teacher Shen, I have worked hard for you, I have to trouble you to come after work." ”

Director Wu's tone was full of apologies.

Shen Youyi, who had already approached the long hair hanging from his ears in his right hand, leaned slightly and bowed, "No, no, it's me and my students who are bothering you!"

Teacher Shen's tone and body movements also have deep apologies.

Teacher Shen's apology stems from her gentle and down-to-earth profound upbringing, and it is not a matter of course for her to trouble others because of anything.

As for Director Wu?

Cheng Mo guessed that the apology in Director Wu's tone was more because he, as the director of the security department, had not been able to catch a person who was secretly drawing in the classroom for so long, and the sense of responsibility of soldiers was often stronger than that of ordinary people.

If he is a careless and irresponsible person, and he has not been able to catch the perpetrator, Cheng Mo thinks it is normal, but Wu Li is obviously not such a person.

In this case, if the perpetrator is not caught, it will be a bit strange.

Cheng Mo felt that things were a little strange, and he was vaguely looking forward to getting some interesting information from Director Wu.

Director Wu and Shen Youyi stood at the end of the corridor and exchanged a few words, and after another young man in a security uniform came over with a key in his hand, Director Wu led them to the second floor.

When the young man in the security uniform opened the office with the sign "Security Department (3)", Director Wu turned around and said: "Because of the limited size of the hard disk and the large number of cameras in our school, under normal circumstances, the video will only be saved for a month, but we will save some important video content separately.....

Although the group was all standing behind Director Wu, Director Wu's eyes did not fall on Teacher Shen, but on Cheng Mo.

"Video, do you mean that the security department has captured a video of the perpetrator?" asked Fu Yuanzhuo.

Director Wu smiled bitterly and said, "If it was filmed, this case would have been solved a long time ago, and it would not have made Mr. Shen afraid." ”

Hearing Director Wu's answer, Cheng Mo and the three of them were a little puzzled, since they didn't take the image of the perpetrator, what video did they watch? But the three of them didn't make a sound, anyway, the answer was about to be revealed.

Shen Youyi smiled, "It's not that serious, the other party's purpose is probably just to trick me and see my appearance, and there is no such deep malice..."

"In these years, the heart of defense is indispensable, Mr. Shen, you are a very eye-catching single woman, you must pay attention to your own safety, the anti-wolf electric shock device I recommended to you last time, did you buy it?" After speaking, Director Wu pushed the door open completely and made a gesture to invite in.

Shen Youyi nodded, and gently patted the beige satchel on his waist, "Take it!"

"When you're in danger, don't be soft. At the same time that Shen Youyi walked into the office, Director Wu gave another admonition.

Cheng Mo thought to himself, "The electric shock device is all ready, will things be so dangerous?"

When a group of people walked into the office, the young man who began to open the door sat in front of the computer and skillfully turned on the computer, the office is not particularly large, probably just like the office of a traditional institution, with four desks hanging blue shutters next to the window in the shape of "Tian", brown lockers are erected on the walls on both sides, and the cabinets are hung with very old black padlocks.

The chassis buzzed in the breathing of a group of people, and the small office suddenly poured into a slightly crowded crowd of six people, Director Wu said, "Xiao Zhang, open the window." ”

The young man named Xiao Zhang put down the mouse in his hand, said "oh", opened the blinds, pushed open the window, and the fresh wind blew in, and the office seemed to be spacious and bright, Xiao Zhang sat back in his position and asked without looking back: "Director Wu, do you want to watch all the videos of the first (9) class of high school?"

Director Wu hesitated, turned to look at Cheng Mo, Fu Yuanzhuo, and Yan Yitong and said, "The situation is a little complicated, so you have to keep this matter a secret, and you must not tell other students, you must promise this to Teacher Shen......"

Fu Yuanzhuo saw that Director Wu's expression was a little solemn, and he was a little frightened, "No.... It can't be some kind of supernatural video, right?"

Director Wu hurriedly waved his hand, "It's not that mysterious..... I don't believe in any gods....."

Fu Yuanzhuo secretly breathed a sigh of relief, "Okay, Director Wu, we definitely won't tell anyone." ”

Director Wu looked at Shen Youyi, and when he saw Shen Youyi nodding, he opened his mouth and said to Xiao Zhang, who was sitting in front of the computer: "Just play a video from the night before the crime." ”

Xiao Zhang nodded, and opened a video file named "2017.12.24" in a folder marked "High School One (9)", obviously this is the video of the night of Christmas Eve, Cheng Mo remembers that Christmas Eve happened to be a Sunday last year, and Christmas on the 25th was a Monday.

After the video pops up, it is a black and white picture, and the clarity is far less than that of the color one, but it is clear that this is the classroom.

Director Wu looked at the video and said: "In fact, when there were four blackboard paintings in the first (9th) class, we replaced the ordinary camera of the first (9th) class with an infrared night vision camera, and it was open all night on Friday, Saturday, and Sunday every week, and sent people to monitor in real time whether anyone had infiltrated the classroom of the first (9th) class, but the strange thing was ..... The monitor never photographed anyone entering the classroom of the first (9th) class on Sunday night, let alone a drawing on the blackboard, but the incredible thing is that the next day, after the monitor was restarted, chalk drawings would appear on the blackboard immediately....."

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