Mingqiao looked around the office and made sure no one noticed them. Then he pointed at Zhang Tao's work badge and said, "Let's switch."

Zhang Tao subconsciously covered his work badge on his chest and took a step back: "What?"

"It's useful." Ming Qiao said slowly, "We must reveal some information that only the invigilator knows to the students."

"Why?" Zhang Tao was puzzled. "Besides, this work badge has my photo and my name on it. It's useless even if you take it."

"It's already this time, you must know that we alone are not enough to rescue all the students. They have to save themselves. Students are the largest group in the school. They have to unite and rely on their own strength. If they want to escape from this huge secret room in the school, they have to know the clues and then find the key to open the door. No matter how the rules restrict us, we teachers must help them." Mingqiao said slowly: "As for your concerns, I can just wear the front of your photo and name inside out, so that the front is not exposed."

After spending a few days together, Zhang Tao and Mingqiao have become acquaintances. Mingqiao brought Zhang Tao along on his last trip back in time, and at this time, Zhang Tao listened to almost everything Mingqiao said. Although he could never be as reckless as Mingqiao, he would help if he could: "Okay, don't change it. How about this, you overlap your work card with mine and put them in the plastic shell of your work card, so that the front side shows your front side, and the back side shows my back side."

"What are you going to do?"

Zhang Tao took off his work badge from his neck and stuffed it into Ming Qiao's hand: "I have a stomachache, I need to take a leave."

Mingqiao held Zhang Tao's work card and looked at him in embarrassment. He knew very well what this meant to Zhang Tao. Once the lie of the chief invigilator was exposed, the consequences would be more unimaginable than if the student lied. But originally, Zhang Tao could be safe and sound, but now he was about to take such a big risk.

Zhang Tao firmly pressed his work badge into Mingqiao's palm: "Mingqiao, this is all for the students. I'm not as smart as you and I don't dare to take risks with you, so this is all I can do for you and the students. At worst, you can just get me a new work badge."

Mingqiao felt Zhang Tao's strength and took a deep breath: "Okay."

When Mingqiao took the test paper out of the office again, he had already made a preliminary plan in his mind.

He has become the chief invigilator, holding the power of life and death of everyone in the examination room. Although other rules of the chief invigilator are still uncertain, the rule of not helping students constrains him all the time. It is basically impossible for him to help students directly like before. The only thing he can take a risk is to go up and target Sun Guiping and others, or more precisely, their "good student" stand-alone system.

And from then on, when it came to his students, he only believed in Shi Xin.

Shi Xin was "conveniently" assigned a student identity by Lao Jiang, which meant that all his subsequent actions would be restricted by this identity. He could not do things that students could not do, but this identity also allowed him to get close to the student group. Ming Qiao was not at ease with other students, but he trusted Shi Xin immensely. With such a middleman, his plan could be implemented smoothly. He had to ensure that Shi Xin understood all his intentions. Secondly, Shi Xin had to find a way to unite all the students and protect them until he was able to rescue everyone.

If he and Shi Xin could synchronize their actions and control both ends, escaping from the school would only be a matter of time.

Mingqiao and Susan came to the classroom again.

After Susan distributed the test papers from the previous exam, Mingqiao took the initiative to pick up the new test papers and answer sheets and distributed them.

When it was Shi Xin's seat, he deliberately leaned forward so that the work card he had prepared in advance could be turned to show Shi Xin the main invigilation instructions on the back.

When Mingqiao saw this, Xin's pupils shrank noticeably, and then returned to normal.

His goal has been achieved.

Next was the work badge that Zhang Tao wanted. Since he couldn't make a new one, he could only steal it from someone else.

Mingqiao paused for two seconds beside Shi Xin's position and asked him, "Do you need any help?"

Shi Xin pointed at an empty, bare pen refill on his desk and looked up at him.

"Susan, prepare a pen for this candidate."

Susan could not disobey Mingqiao's order and could only do as he ordered, but Mingqiao knew that this would definitely ignite the fire in Susan's heart again.

When the fire started and could not be extinguished, Zhang Tao got the new work badge he wanted.

Mingqiao returned to the role of NPC very naturally. Zhang Tao said that the chief invigilator must have two hours every day when he cannot control himself, so he should spend these two hours when everything is arranged properly.

But when Mingqiao bit his tongue to wake up again, what appeared before his eyes was the scene of Shi Xin pressing Susan on the desk.

He was indeed shocked, but in order to prevent others from noticing his abnormality, Mingqiao suppressed his inner throbbing and calmly said to Shi Xin: "Go back to your seat."

Mingqiao had expected Shi Xin and Susan to have a conflict, but he never imagined that Shi Xin would actually fight with Susan. Unless Susan had done something wrong to him, Shi Xin would never be so impulsive.

Mingqiao understood that it seemed that Susan could no longer hold back her anger.

He hadn't expected this step to come so quickly.

Mingqiao thought about the possible death process that Susan might face in his mind. The next second, a familiar and dazzling red light appeared, and Susan nodded her head to the ground as he had been accustomed to in the past few days.

A trace of cold sweat seeped out of Mingqiao's hair. He pinched his palms to stay calm and held Susan's work badge in his hand.

He was eager to find an excuse for Susan's death, so he mouthed to Shi Xin: "Iron rule of the exam: It is forbidden to provoke the chief invigilator more than three times. Tip: The provocateur will bear the consequences at his own risk."

Originally Mingqiao thought that the students in this classroom had witnessed Zhang Tao killing them several times and should not be afraid anymore. However, after the red light dissipated and Susan's body disappeared from the spot, the students still let out a deafening scream.

Mingqiao had never thought that it would be so easy for the chief invigilator to kill someone. He only needed to think about it, and an invisible sharp blade would be placed on someone's neck. The process was fast and cruel, which scared Mingqiao a lot.

He finally understood why Zhang Tao felt so guilty and painful when he found out that he had killed a student.

During the lunch break, Mingqiao fled back to the office in a trance.

As soon as he entered the door, he was stopped by Zhang Tao.

"How is it? Did it go smoothly?" Zhang Tao asked impatiently.

Mingqiao nodded weakly and handed him the work badge he was holding in his hand.

Zhang Tao took it and looked at it: "Okay, I'll just replace his photo with my own."

There was no indication behind Susan's work badge, it was blank. Zhang Tao said casually while posting the photo: "It seems that there is no indication behind the deputy invigilator's work badge." Zhang Tao thought of something else and turned to look at Ming Qiao: "So, when the principals prepared your work badge at the beginning, they didn't think you would be the main invigilator, but directly prepared a deputy invigilator badge for you."

Mingqiao nodded, his voice a little hoarse: "Yes, the moment I heard Sun Guiping tell me to be the chief invigilator this morning, I knew he didn't really intend to let me do it. It was my sudden change that caught them off guard, so they reluctantly gave me the title of chief invigilator. My actual work badge has not changed, it is still the work badge of deputy invigilator."

"Killing the deputy invigilator is no small matter." Zhang Tao became worried: "I will definitely send you a more powerful and torturous deputy invigilator this afternoon, so be careful."

"I know." Ming Qiao said, "I have already used up those two hours when my brain was empty. I will definitely keep watching it all afternoon."

"But what's wrong with your voice?" Zhang Tao had already made his new work badge, put it on his neck to try it out, and then asked Ming Qiao: "How is it? You can't tell that it was attached later, right?"

"The sound was caused by being scared. You can't tell that it was posted later." Mingqiao leaned against the wall with weak legs: "Hey, I'll go find Director Jiang."

"Go find him again?" Zhang Tao asked, "Where are you going to die this time?"

Ming Qiao shook his head: "I don't plan to die again. I'll go with him to tinker with the system."