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, especially top-secret documents, anyone other than the director must have at least one inspector on site. And a Safe No. 1 stores top-secret documents, so there must be at least two inspectors on site to supervise them. 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 in the safe. Only the director carries one with him during ward rounds and preservation. When we check the safe, there must be at least two people doing it at the same time, plus at least one file manager."
Having said 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 marks. 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, everyone except Zhuang Xiaoman took one in their mouths.
Yu Zerun puffed out a puff of smoke and said: "I took two brothers and rechecked the safe at about 2:15 the day before yesterday. In addition to the three of us, there were two file administrators present. Lei Dabao and Wang Yu. The first thing we checked after we opened the safe was the secret code. I found out 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 message was also set by the two of us. So I am very sure that this secret message must have been touched by someone."
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. He wants to continue to lurk, so he may use peeking to reset, or The document was stolen by taking photos and reproducing them. But this kid must also be a professional spy. He discovered the existence of the secret mark and tried to reset it, but he had already destroyed the position when he opened the door, so despite his efforts, he restored it to its original state. , but there are still flaws in the reset. I can tell at a glance that it has definitely been artificially tampered with."
"Yeah." His subsequent inference was still logical, but it was only logical, and it didn't explain anything. Fan Keqin is like this. Before he can determine the situation, he may agree with other people's opinions, but he still needs to be sure. So he asked: "Can I ask what the secret mark is?"
Yu Zerun gestured with his hands and said: "A small black velvet thread 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 at the time. And remember the position, and then Use your fingers to press the extra section firmly on the upper edge of the cabinet door, and don't let go when closing the door, so it won't move. But for those who don't know, as long as you don't hold it with your hands in advance It is a small piece of silk thread that is almost invisible to the naked eye. When you open the safe door, it can be said that its position will inevitably move."
The explanation is very clear even with words and gestures. Fan Keqin nodded in understanding and asked: "I would like to ask, are the secret notes all decided on a temporary basis, 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 we prepare in advance, but loopholes appear. Therefore, when closing the safe door, we use temporary materials, or use some small dust, or hair, or a small Dropping pen water, etc. 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, and also 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."
"Yes." Fan Keqin said: "Brother Zerun, how long did it take between the time you opened the safe at 2:15 pm the day before yesterday 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. The sixth day of this month." Yu Zerun explained: "Safe No. 1 is top secret after all, so even if re-inspections are carried out, 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?"
"The sixth is also in the afternoon." Yu Zerun looked at Xiang Renjian and said, "Director, I remember it was around three o'clock, right?"
"Yes." Xiang Renjian said with certainty: "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 the 6th, until the day before yesterday, the 8th, um, nearly forty-eight hours. During this period, the thief has time to commit crimes, right?"
"Yes." Yu Zerun nodded: "But... I feel it should be at night. If it is during the day, it is almost impossible. There are guards in the corridor..."
