Dijinpingxie

On the surface, Black Glasses is a serious graduate student in the Department of Biochemistry, but in fact he also took a second degree in Computer Science when he was an undergraduate, and in Zhang Qiling's words, blind people can be trusted.

At this point, the black glasses were still in the laboratory, so within a minute, he arrived at Zhang Qiling's location.

Seeing the black glasses coming over, Zhang Qiling briefly explained the current situation and the matters that needed the assistance of the black glasses.

"Well..." After hearing this, the black glasses rarely said seriously, "In this way, we can't be sure where the golden retriever is, whether there is any accident... maybe he went to help someone, and if he doesn't come back, he will call for help." He packed up his things. So now I go to the security room to turn on the system to see if the golden retriever has left the laboratory building. You two... just check here first. By the way, I would like to ask if anyone who is still in the building has seen a golden retriever , so it’s faster. I’ll call you when I have the results.”

"Okay." Fatty answered faster than Zhang Qiling, "Brother, you go to the third floor, I'll go to the fourth to sixth floor..."

"Okay." Zhang Qiling responded, and then quickly ran towards the direction of the stairs.

It was so late, and there were not many students and teachers left in the laboratory building. Fatty and Zhang Qiling searched roughly, but no one said that they had seen Wu Xie today.

Ten minutes later, the three gathered in the security room where the black glasses were.

The black glasses have pulled out all the monitoring for this day, and are now fast-forwarding to find Wu Xie's trace.

Fatty said it well before, this laboratory building only has cameras installed at the corners of each floor and the east and west gates, so in the most optimistic situation, you can only know which floor Wu Xie is on.

Looking at the display screen, the fat man said thoughtfully, "It's very abnormal."

The black glasses asked casually, "What's abnormal?"

"It's eleven o'clock, no matter where the naive is, it's time to contact my little brother, right?"

"Oh, that's true." He stared at the screen with black glasses on, "The golden retriever looks like the kind of good boy who listens to his parents."

"Ah!" Before the previous sentence was finished, the black glasses yelled, and then quickly stopped the fast forward of a screen, "The golden retriever is walking up the stairs, this is... the third floor, he is going upstairs gone."

The fat man also leaned forward: "Then, the fourth floor or the fifth floor?"

The black glasses adjusted the other videos to the same time. After watching them, they found that Wu Xie was going to the sixth floor at this time.

"When did you come down?" Fatty muttered, letting the black glasses show the rest of the surveillance cameras on the sixth floor.

In the end they discovered that Wu Xie did not come down after going up to the sixth floor.

Upon getting this result, Zhang Qiling was the first to run out of the security room.

The fat man and the black glasses glanced at each other, and followed him up the stairs.

The key for each floor of the laboratory is placed in a certain room on that floor. Anyone who is resident in the laboratory knows where the key is placed. When he reached the sixth floor, Zhang Qiling took out the key from that room. Then they opened the closed doors one by one.

Fatty followed behind Zhang Qiling, every time he saw him open a door, he felt a little nervous.

If the possibility that the three of them overlooked the surveillance is ruled out, then Wu Xie went up to the sixth floor around 11:30 in the morning, and it is already [-]:[-] in the evening.

On the sixth floor, twelve hours.

Fatty felt that he shouldn't read so many mystery novels. He was really scared now, afraid that after Zhang Qiling opened a certain door, he would see...Wu Xie without vital signs.

The fat man slowly raised his head and watched Zhang Qiling's back. He didn't know what Zhang Qiling was thinking at the moment.

"Brother..." After searching for half a floor, the fat man felt that his psychological burden had reached its limit, and he had to make a sound to let the air flow a little.

"Wu Xie is alive." Zhang Qiling seemed to know what the fat man was thinking, and did not look back at him, but continued to open the door to search, "I can feel it."

"But your nose..."

Zhang Qiling closed another door and said firmly, "He's here."

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