Through the intercepted recording, although the suspect's speech was not clear, the voice coming from the television could be heard very clearly. It was learned that a popular war-themed TV series was being broadcast on TV at that time.

The premiere time of the TV series is from 8 to 10 o'clock in the evening, the prime time of CCTV. Starting at 9:10 a.m. the next day, four provincial television stations broadcast at the same time.

According to the time when the recording was intercepted, it is known that the suspect made contact with the outside world at 9:40 a.m. That is, during the time period when two maintenance workers at the electromagnetic shielding station of the coating plant violated the regulations of random shutdown in the factory and habitually shut down for maintenance.

This raises another mystery that is difficult to explain.

At this time, all the employees were in their respective jobs, and there was no one in the living area at all, which means that the suspect was not in front of the TV to communicate with the outside world, so where did the TV sound in that recording come from?

There is only one possibility that the suspect recorded it in advance.

Further analysis of the TV sound in the recordings revealed that it was the first of two episodes that aired on the night of the loss of the five grams of invisible paint.

Coincidentally, the suspect's contact with the outside world occurred exactly half an hour before the barrel of problematic paint was transported from the warehouse to the workshop where five grams of paint were found missing.

The first thing that Wu Ming can rule out is the possibility that the suspect used the television network in his living area to communicate with the outside world.

This was confirmed after entering the coating plant. Because although the coating factory's TV show seems to be synchronized with the outside world, it actually has a delay of 45 seconds.

Through understanding, it is known that the radio station first decodes and caches the signal transmitted by the only radio and television optical fiber line that enters the coating factory in a decoder, and then uses a very advanced, one-way jump technology to input the cached signal to the TV terminal in the dormitory connecting the living area in the radio station. In the process, the factory's television was disconnected from the only input fiber.

Since it is impossible to use high-tech means to communicate with the outside world through television, the suspect must have used communication equipment, such as mobile phones, to communicate with the outside world. This is not surprising, although it can only be used after leaving the factory on weekends, but almost all employees have a mobile phone. It's just that they stay in their dormitories during work.

Instead of going back to the dormitory in the living quarters, he used the pre-recorded sound of the TV series to confuse the public, which shows that the suspect had made a very careful plan in advance.

But how did the suspect bring his cell phone or other communication device with him?

Not only do coating plants have strict regulations, but they are also inspected when entering the production area. Not only are communication equipment not allowed to be brought in, but even everyone's work clothes are changed into in the changing rooms located on both sides of the entrance to the production area.

In other words, even work clothes are not allowed in the living quarters, let alone anything else.

Since the suspect was unable to bring mobile phones and other communication equipment into the production area, where did he get the communication equipment and contact the outside world in the production area?

There must be something wrong with this. Either the inspection was not strict enough that the suspect successfully brought the communication equipment into the production area. Either the suspect had hidden the communication equipment in the production area beforehand. Of course, the latter also requires the suspect to find an opportunity to bring the phone into the production area.

Only by clarifying this question can Wu Ming go on to find the answer to another question - how did the suspect know about the electromagnetic shielding station, although the regulations are random, in fact, it is basically scheduled to be scheduled at 9 to 10 o'clock in the morning for more than ten minutes of maintenance This is a habit of violating discipline.

When he returned to the office, he handed over the information of the four Qian Jun who were sent by Lin Jia, as well as the two security supervisors who were on duty with Qian Jun at the same time that night, one of them temporarily asked for leave to go to the bathroom because of a stomach upset, and the other was half a step behind, and handed over the information of the two security supervisors to Song Hui and said: "Take a look first, this is the social information of several main suspects investigated by Lin Jia and them." ”

Seeing that Wu Ming turned around to leave, knowing that it was impossible for him to go back to rest at this time, Song Hui hurriedly asked, "Where does the chief want?"

"I'll just go outside. ”

"I'll go with the chief. Song Hui put down the thick stack of materials in his hand and said, "After listening to the recording all night, my brain is a little big. ”

Wu Ming did not object or agree, turned around and walked out of the office first.

It wasn't until he came to the outside of the office building that Wu Ming casually asked Song Hui beside him: "Still no gain?"

"So far, we have taken the voices of a total of 175 people, and the voices of three suspected suspects have been screened from them. Song Hui took a step forward, turned his head to look at Wu Ming and said, "But further confirmation is needed." ”

"Well, the next step is to focus on a few people in the information that just came. ”

"Yes. ”

Seeing that Song Hui was still looking at him, Wu Ming suddenly reacted and said, "I just contacted Lin Jia just now, and I have already entrusted her to convey what you said to Song Jin." ”

Song Hui didn't seem to care about this matter, and after hesitating for a moment, he asked, "Chief, the forest bureau is bigger than you, right?"

"yes, what's wrong?"

"How can the chief be called by his first name?"

"Can't you?" Wu Ming smiled faintly and said, "What do you think I should call her?"

"At the very least, we should call it the Forest Bureau, right?"

"She's your director, not mine. ”

Knowing what Song Hui was thinking about, in addition to wanting to know his military rank, there might also be a little bit of motivation to explore the relationship between himself and Lin Jia. Wu Ming didn't believe that Song Hui, who kept in touch with Song Jin almost every day, would not hear anything from Song Jin.

"Chief, you really don't have any secrets in your phone's memory, do you?"

"How ....... After being reminded by Song Hui, Wu Ming immediately reacted, and the text messages he sent to Zhong Caini during his hospitalization should also be in it. "If you don't have anything to do with that recording, you can delete it as soon as you go back. ”

"Got it, chief. I only heard a smile in Song Hui's tone and continued: "Actually, there are not many irrelevant things, just a few text messages." I deleted it without even looking at it. ”

Wu Ming turned his head to look at Song Hui, but no matter how he looked at it, it didn't seem like he was telling the truth. While speeding up his pace, he turned his head and said lightly: "Actually, it doesn't matter if you read it." ”

With a light smile, Song Hui changed the subject and asked, "Chief, what are we doing here at such a late hour?"

Song Hui found that this time Wu Ming did not lead her around the factory wall as before, but came to the barbed wire between the living area and the production area in the factory, which was about two meters high and so fine that it was difficult to stretch through a finger, so he subconsciously asked.