With the real login address of "Caiyunfei", without Yang Yuting's help, Tan Tan quickly found out that "Caiyunfei" logged in to the network through a mobile phone number belonging to Jiangjuncheng Mobile Company.

Although the registration information from the mobile company regarding the mobile phone number was not surprisingly handled with a fake identity card, and the mobile phone number has never made or received any calls other than to log in to the Internet. However, through technical means, the approximate location information of the mobile phone number was finally locked on a few times - within one kilometer of the four-dimensional research institute!

Another piece of good news is that the phone number is not pin despite being turned off. In other words, it is very likely that "Caiyunfei" will use this number to log in to the network again.

Wei Chen, assign someone to implement 24-hour uninterrupted monitoring of this mobile phone number. As soon as you find out that the number is turned on, report it immediately. ”

"Understood. ”

"Tan Tan, you contact Song Jin and go to the Four-Dimensional Research Institute. All the file information of everyone in the office was retrieved, including their contact information and web chat tools. ”

"Yes. ”

Although it is not possible to determine that "Cai Yunfei" is an insider of the 4D Research Institute based on the approximate location of the mobile phone number when it is turned on, combined with the suddenness of Zhong Caini's attack, Lin Jia cannot be ruled out that the two attackers who have been waiting outside the door of the 4D Research Institute for a week have obtained "Cai Yunfei", or other people who saw Zhong Caini's behavior about to leave the 4D Research Institute that night.

Similarly, Lin Jia could not confirm that the two suspects who attacked Zhong Caini and hired them at their expense must be the culprit behind the attack on Zhong Caini.

In addition, in view of the previous experience of "Uncle Sam's Tears" setting up ecstasy arrays for the police many times, Lin Jia could not help but consider other possibilities for the behavior of the two attackers waiting on the street near the gate of the 4D Research Institute for a long time.

For example, the behavior of the two suspects similar to the police is "Cai Yunfei", or the person behind them deliberately gave the police a trick, just to shift the police's attention to the two suspects after the incident, so as to ignore the possibility that the information revealing Zhong Caini's whereabouts came from within the Four-Dimensional Research Institute?

After the Yang Wenjing case, not only Lin Jia, but also all the members of the serious crime team who participated in the case, as well as members of the National Security Bureau such as Song Jin and Zhao Zengyuan, have also learned enough lessons from it.

Therefore, when he received a call from Tan Tan and learned about Tan Tan's intention after meeting him, Song Jin immediately guessed Lin Jia's intentions.

"Come, you come with me. ”

Although Song Jin has always been hiding in the dark to observe the security guard Lu Xidong who is pretending to be a demobilized soldier Niu Tao, he does not shy away from entering the Four-Dimensional Research Institute with his real identity. Previously, in order to obtain Lu Xidong's fingerprints and archival materials, Song Jin, who had been in contact with the relevant leaders of the institute twice, took Tan Tan to enter the Four-Dimensional Research Institute again. I went directly to the third floor and knocked on the office door of Wang Ding, the deputy director in charge of logistics and security.

"Deputy Director Wang, I'm going to disturb you again. ”

"Hehe, Officer Song is polite. If there is anything to say directly, we will fully cooperate. ”

"Oh, Deputy Director Wang, this is my new colleague, Officer Tan Tan. ”

"Hello, Officer Tan. After greeting Tan Tan very politely, Wang Ding said warmly: "Two police officers, please take a seat." ”

When Tan Tan Dao made his intentions clear, Wang Ding was obviously a little surprised and asked: "What does the Forestry Bureau mean to ask for information such as the files and contact information of all the personnel of the Institute?"

"It's all. ”

"Do you suspect that something is wrong within us?"

"It's just suspicion. ”

Song Jin can also understand the mood of deputy director Wang Ding. Not to mention that the institute has a total of more than 170 employees, although it has nominally been separated from the Dongfeng coating factory, but those who know the inside story know that the four-dimensional research institute is also a unit with a high level of secrecy. That is, the State Security Bureau can access their personnel files, and the Municipal Public Security Bureau does not have this right.

"Okay, two officers, please wait. ”

In the gap between Wang Ding sending people to sort out the materials, he asked Song Jin and Tan Tan again: "Has the case of attacking Dr. Zhong been solved a few days ago?"

"It was precisely because of that case that we had access to all the personnel files. ”

"In other words, do you suspect that our insiders leaked the news of Dr. Zhong's outing?"

"This possibility cannot be ruled out. ”

"On the morning of the second day after the incident, the institute organized a meeting with relevant personnel. While speaking, Wang Ding took out a document from a folder and handed it to Song Jin: "Here is a list, which is the list of the dormitory who lived in the unit on the night of the incident, including the security guards on duty and the security guards on patrol. ”

"Did you find anything suspicious in this?"

"Nope. We spoke with them one by one and confirmed the whereabouts of all the people on the list that night. ”

"How many people have admitted to seeing Dr. Chung when she was leaving the Institute?"

"There are two security guards on duty in the office building, two security guards on duty in the dormitory building, and two security guards on duty at the gate. In addition to the six of them, Luo Shiqiang, the deputy chief engineer who was separated from Dr. Zhong's dormitory by a wall, said that he also heard Dr. Zhong opening and closing the door and going up and down the stairs, but he did not think that she was leaving the institute. ”

"Wasn't there still four people living in the dormitory at the time?"

Two of them were Dr. Chung's assistants, and the two young girls were in their room watching the latest hit TV series and did not hear Dr. Chung going up and down the stairs. As for the family members of the two employees who came to visit their relatives, one of them went to bed early because he had a cold, so he took medicine. The other was coaxing the child, but he didn't hear it. ”

While speaking, Wang Ding arranged to sort out the information such as the files and contact information of all employees, the secretary of the office of the institute, a fashionable and decent beautiful girl knocked on the door and walked in.

"Deputy Director Wang, all the information is in this USB flash drive. ”

"Including everyone's contact information, online chat tools, etc.?"

"Yes. ”

Seeing that the staff member turned around to leave, Song Jin asked, "Do you include the information of the part of the security guard hired externally?"

"Including. ”

"Thank you. ”

"Hehe, let me introduce you. Wang Ding stopped the secretary who was about to turn around and leave, and said, "These two are Officer Song and Officer Tan. If there is anything you need help with in the future, you don't need to ask me, you can just do what they tell you to do. ”

"I see, Deputy Director Wang. The young female secretary was very polite, and successively stretched out her hand to Song Jin and Tan Tan to introduce herself: "Hello Officer Song, good Officer Tan, my name is Kan Caiyun, and I dare to Kan." If there is anything in the future, just tell me to do it. ”

(End of chapter)