Xiang Renjian said: "Zerun, you and Keqin will give you a detailed introduction to the situation at that time."

Although Fan Keqin listened to what Sun Guoxin said, he heard it after relaying it again and again. Now it was very necessary to listen to the first party's statement, so he looked at Yu Zerun.

"Okay, director." Yu Zerun replied, then sorted out his thoughts a little, and said: "The afternoon before yesterday... around 2:15, I was in the switchboard, checking the work. When I was reviewing safe No. 1, I

Discover……"

"I'm sorry." Fan Keqin interrupted him: "I would like to ask, what does reexamination mean? Have you checked before? Check again?"

"Yes, you can say that." Yu Zerun nodded and said: "When placing confidential documents, especially top-secret documents, anyone other than the director must have at least one inspector on site. And a

Safe deposit box No. 1 stores top-secret documents, so there must be at least two inspectors on site to supervise it.

That's it. When the documents are stored in the safe, we have to make a secret note at that time. As for the keys, there are four in total, three of which are kept in the inspection room, and only the director carries one with him. When we checked the safe

, it must also be done by at least two people at the same time, plus at least one archives administrator.”

Speaking of this, Yu Zerun paused and said: "At that time, I took two of my brothers to do occasional re-inspections on Safe No. 1. This inspection always exists. The main inspection is the last time it was opened.

The number of files in the safe, as well as the secret markings. Especially safe No. 1, is the top priority. Therefore, no matter who opens it or for what purpose, we will update the secret mark and register the number of files inside."

"Yes." Fan Keqin nodded and said, "Brother Zerun said it in great detail. I understand. Please continue."

"Okay." Yu Zerun took out a pack of cigarettes, first gave way to Fan Keqin, then to Renjian, and then to Zhuang Xiaoman, Lao Qi, and an investigator. In the end, except Zhuang

Except for Xiaoman, everyone else had one in their mouths.

Yu Zerun puffed out a puff of smoke and said: "I took two brothers and rechecked the safe at around 2:15 in the afternoon the day before yesterday. In addition to the three of us, there were two file administrators present.

Lei Dabao and Wang Yu. After we opened the safe, they were the first

The first step I was about to check was the secret code. But I found that the secret code had moved because the last time I opened the safe and closed it, only I and Inspector Li Ya knew the secret code. The secret code was also set by the two of us. So I am very sure.

This secret mark must have been tampered with."

When Yu Zerun said this, he glanced at Xiang Renjian and said: "After I found out, I immediately told everyone not to move. I called the director on the spot to briefly explain the situation. The director arrived quickly and then repeatedly confirmed the secret message. It was indeed

It had been tampered with, and then we checked the files inside together, but nothing was missing. Thinking about it... it must have been done by an insider, and he wanted to continue to lurk, so

It may have been through peeking and resetting, or by taking photos and reproducing the files. But this kid must also be a professional spy. He discovered the existence of the secret mark and wanted to try to reset it, but when he opened the door, it was already there.

The position was damaged, so even though I tried very hard to restore it to its original state, there were still flaws in the restoration. I could tell at a glance that it was definitely man-made."

"Hmm." His subsequent inferences are still logical, but they are only logical and do not explain anything. Fan Keqin is like this. Before he determines the situation, he may agree with other people's opinions.

But I still needed to be sure. So I asked, "Can I ask what the secret mark is?"

Yu Zerun gestured with his hands and said: "A small piece of black velvet thread that is about this long. This thing has a certain degree of adhesion. Place it in the corner of the safe. I chose the upper right corner. Remember the position, and then

Use your fingers to press the extra section firmly on the outside of the cabinet door.

The upper edge of the side does not loosen when the door is closed, so it will not move. But for those who don't know, as long as they don't hold it in advance with their hands, a small section of extended silk thread that is almost invisible to the naked eye can be opened.

It can be said that the safe door will inevitably move its position."

Even with words and gestures, the explanation was very clear. Fan Keqin nodded in understanding and asked: "I would like to ask, are the secret notes all decided temporarily, or are there several plans set up and used in rotation?"

"Temporary." Yu Zerun said: "Like the black velvet thread, I set it up because Li Ya was wearing a velvet dress, so I made a temporary decision to take out the smallest section of it and turned it into a secret mark. We

We usually don’t make plans, but sometimes, when we prepare in advance, loopholes will appear. Therefore, we always use temporary materials when closing the safe door, or use some small dust, or hair, or a small

Dropping pen water and so on. There is no fixed routine or use of materials."

Fan Keqin pointed to the door and asked: "When I just came in, I saw a guard at the corner of every corridor, as well as in the stairwell. Was this something that existed before? Or was it added later?"

"It was there before." Yu Zerun said: "But...it is gone after eight o'clock in the evening. But the guards will still patrol the entire building regularly or irregularly."

"Hmm." Fan Keqin said: "Brother Zerun, how long did it take between the day before yesterday at 2:15 in the afternoon and the last time you opened the safe, that is, when you set the velvet thread secret code, that you didn't check it?"

"Two days. On the 6th of this month." Yu Zerun explained: "Safe No. 1 is top secret after all, so even if it is re-inspected, it cannot be too frequent, so it is usually an interval of two or three days, and then

Open the review again."

"Well, the 6th." Fan Keqin said: "What time is the 6th?"

"It's the afternoon on the 6th." Yu Zerun looked at Xiang Renjian and said, "Director, I remember it was around three o'clock, right?"

"Yes." Xiang Renjian said affirmatively: "About three o'clock, I didn't pay attention to the specific minutes, but it won't be a few minutes before or after three o'clock."

Fan Keqin nodded and said: "Then from the 6th to the day before yesterday, the 8th, um, nearly forty-eight hours. During this period, the thief has time to commit crimes, right?"
Chapter completed!