Zhang Yuanzhi drank some beer. Although his face was very red, his eyes behind his glasses were still very clear.
When Qu Sen mentioned that Zhou Li and Li Ying were very busy with work, he seemed to want to ask a few more questions, but the words stopped at the tip of his tongue.
The two of them drank four beers each and talked for almost two hours. Zhang Yuanzhi proposed to take Qu Sen somewhere else to play.
Qu Sen smiled and said, "When we go back, 'my boss' will check on us."
Zhang Yuanzhi laughed for a while and did not mention anything else.
Soon, the two of them ended the drinking party. They came out of the bar and took a taxi. Zhang Yuanzhi first sent Qu Sen back to the unit before he left alone.
When Qu Sen entered the equipment innovation team's station, he immediately found Team Leader Tao, who was waiting for him. After he handed over the memory card with the recording to Team Leader Tao, he talked about some of the details that happened during his meeting with Zhang Yuanzhi that could not be recorded in the recording.
He described in detail that Zhang Yuanzhi wanted to ask about Zhou Li and Li Ying's work situation. However, for some unknown reason, he stopped himself from saying those words.
Team Leader Tao was a little surprised by Qu Sen's keenness. He smiled happily and revealed more information to Qu Sen.
For example, when Qu Sen and Zhang Yuanzhi were chatting, Zhang Yuanzhi's phone was on the line the whole time.
When a field agent from the National Security disguised as a guest "passed by" Zhang Yuanzhi with a small detection device, he confirmed that there was an invisible earpiece hidden in his left ear.
"So, when Zhang Yuanzhi was chatting with me, someone was monitoring the whole time and even guiding him on the topic of conversation?" Qu Sen asked in surprise.
Group Leader Tao nodded.
"Is there any way to find out what was said on the other end of the phone?" Qu Sen asked again.
"Zhang Yuanzhi's phone should have been installed with a hardware encryption chip. With our current technology, we can't eavesdrop on it. The next time you talk, we will communicate with the mobile communication company in advance and think of a solution for the transit base station. "
Qu Sen smacked his lips. He knew that if the other party used hardware encryption, the base station wouldn't be of much use.
From Zhou Li's postgraduate course, he had a certain understanding of hardware communication encryption technology. He knew that the data exchange between the two parties had to be encrypted and decoded by the encryption chip during the process of sending and receiving.
Even if the National Security intercepted the data stream, it would be meaningless. Compared to software encryption, breaking hardware encryption required an astronomical number of calculations. It could be said that it was a matter of luck.
He might be able to break it in three to five days, or he might not be able to do it in three to five months. The most annoying thing was that once the other party's encryption chip used an intelligent random encryption code, it meant that the encryption method for each call would be completely different.
Even if he cracked it once, it wouldn't be of any use. He could only start from the basic encryption logic after collecting enough samples. But in practice, it was not as simple as talking about the principle.
"It's okay, don't be discouraged. As long as we have patience, even the most cunning fox will show its tail. "Team Leader Tao saw Qu Sen's depression and comforted him in a relaxed tone.
"Then should I continue to follow the discussed script?" Qu Sen pulled his thoughts back from the technical level and confirmed.
"Well, keep the current contact pattern. You can be more vigilant during normal times, drink some wine, and then follow the information we planned and look for opportunities to throw out.
Don't be nervous, you are very talented, seize the opportunity yourself. Remember, no matter when, improvisation is the most important. "Team Leader Tao encouraged.
"Yes!"
At the request of the National Security, the military drone test group extended the secondment of Zhou Li and Li Ying for another week.
The two girls stayed in the equipment innovation group mainly to draw the attention of the people who might be behind Zhang Yuanzhi to the public security. It was to prevent the other party from noticing the testing work being carried out on the communication team.
The two of them would certainly not be idle on weekdays, they mainly helped the command vehicle design team with assembly tests. At first, the progress was a bit slow, but after the hardware design unit of the mobile communication relay station sent the improvement opinions, everything became smooth.
When the work was basically over and the Police Uniform Bureau was commissioned to build it, Qu Sen and the other two went out for a gathering at Zhang Yuanzhi's request. This time, it was mainly for fun and they ate a real seafood meal.
Zhang Yuanzhi's performance was very decent. Except for a few words of persuasion and asking the three to help him do some work when they were not busy, he did not say anything that made people wary.
The cost of this four-person gathering was not a small amount. But whether it was Qu Sen, Zhou Li, or Li Ying, none of them said anything to spoil the fun, and they enjoyed it with peace of mind.
Two days after the meal, the staged testing of the military drone project team came to an end. After the team left, Zhou Li and Li Ying continued to stay in the equipment innovation group for two more days before leaving by train.
Standing on the platform, he watched Zhou Li make a face at him through the slowly moving car window. Qu Sen felt that his heart suddenly became empty. He couldn't help but take out the phone and dialed Zhou Li's mobile phone.
"What?" Zhou Li thought Qu Sen had something else, so he asked strangely.
"Nothing, I just miss you." The wind on the platform was very strong, and Qu Sen's voice was a little loud.
"You're crazy!" Zhou Li spat out two words and pressed the hang-up button, but he couldn't hide the smile on his face.
"I'll die of nausea!" Li Ying lay on the opposite bunk and muttered. She turned around and faced the wall of the carriage to continue playing with her mobile phone.
The three of them didn't know that at this time, a mobile phone in the city had just received an email.
The content was: Zhou, Li, you are more vigilant. You have the opportunity to come into contact with core secrets. You can take your time.
Qu, you have a lot of development prospects. You have a lot of significance in the future. You can choose the right opportunity to test them step by step.
— —
After Zhou Li and Li Ying left, Zhang Yuanzhi would still ask Qu Sen to drink together if he had nothing to do.
Qu Sen told him that the team he was in charge of was cooperating with the Huacheng police on a big case, and they might be very busy in the future.
Zhang Yuanzhi quickly asked what the case was.
Qu Sen vaguely answered that it was a murder case of the Criminal Police Crime Squad, so Zhang didn't ask any more questions.
Qu Sen did this because he was following the instructions of the National Security. On the other hand, he was really busy because there was progress on Gao Sheng's side.
The joint task force suspected that Wu Entai was communicating with the outside world through the satellite phone. However, with the use of technical investigation methods and the use of satellite signal collection equipment, they didn't find anything after a week of continuous surveillance.
The task force quickly adjusted their thinking and focused on the Malaysian Chinese, Lin Haizhen. On the third day after using all the technical methods, they finally caught him in the office lounge using the satellite phone to communicate with the outside world.
The language of the call was an unknown language. After it was recorded by the hidden sound pickup device in the lounge, it was handed over to the language expert for identification.
The conclusion was that Lin Haizhen used Tamil, one of the official languages of Malaysia.
The task force immediately found a translator to translate it. The translation was: "Ah Tai is very careful. He will probably stay in China for a while.
He asked Binti to prepare some samples and specifically told him that the purity must be good, as it will be used at any time. He should have already contacted a suitable distributor. "
"Get me the call records of Wu Entai and Lin Haizhen for the past few days." After Gao Sheng read the translation, he immediately ordered his subordinates.
The call records were quickly sent over. Gao Sheng looked at the three simple calls between the two in the past week and threw the record book in front of Jia Chengliang. He knocked on the table and said, "Why does Lin Haizhen know about Wu Entai's movements, but we don't? Wu Entai must have some secret way to communicate with the outside world! "
"Nonsense!" Jia Chengliang pulled the call records aside and said angrily.
"F * ck, what the hell is going on with these two bastards?" Gao Sheng walked around the office in annoyance.
After pondering for a long time, he shouted to his subordinates in the room, "Let's start the meeting! Think about it carefully and see if there are any blind spots in our surveillance. "
In order to find out how Wu Entai communicated with the outside world, the task force specially assigned a few people to cooperate with the daily behavior records of the two suspects. They almost broke down all the details, and according to the time period, they looked for the missing parts bit by bit.
Judging from Lin Haizhen's call records, they could basically confirm that Wu Entai entered the country this time to bring his Azrael into the domestic market. He must have secretly communicated with the distributor.
Moreover, from the way Lin Haizhen spoke, it was very clear that the two of them were not on the same side. Lin Haizhen was most likely monitoring Wu Entai for someone else.
Regarding this situation, the Huacheng Municipal Bureau once again sent more manpower to the task force. All the mobile forces were on standby 24 hours a day.
Gao Sheng and Jia Chengliang were responsible for one target each. They were almost rotting in the surveillance car.
Since the Huacheng Municipal Bureau required all possible auxiliary means to be on standby, the drone team was naturally included.
During the day, the Huacheng Municipal Bureau sent out a second batch of students to be on duty. At night, the drone design team and the first batch of six students were on duty.
The drone design team had five people, but Big Sister Liu had no talent in controlling drones. Therefore, including Sun Miao who was still recovering, there were only four people. Together with the six students, they were divided into five groups.
Because they were responsible for both Wu Entai and Lin Haizhen's shifts, everyone had to take shifts every other day.
After taking two shifts on Lin Haizhen's side, Qu Sen's third shift was Gao Sheng's. It was almost seven o 'clock in the evening. Qu Sen casually bought some food from a roadside shop and pulled Liu Zhiquan, who was in the same group, to Wu Entai's rented neighborhood.
The neighborhood's security was very strict, but Qu Sen had the neighborhood's access card. He directly swiped the card from the unguarded side door and entered the courtyard.
He circled around the western district and dropped Liu Zhiquan off next to the field car that was responsible for guarding the west side. Then, he drove to the eastern district alone.
After parking the car next to the surveillance car, he directly opened the door and went in with the remaining takeout boxes.
The surveillance car was a Buick business car. The back seats were already removed. More than half of the space was taken up by the surveillance equipment. The remaining space was only enough for two people.
After Qu Sen arrived, the drone on duty during the day carried a large trash bag out of the car and left.
When only Qu Sen and Gao Sheng were left in the car, Qu Sen wrinkled his nose and said, "Big brother, can't you take some time to take a shower?"
"We're all men. What's there to be picky about!" Gao Sheng took big bites of rice and vegetables as he spoke unclearly.
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