In the next few days, Tang Tian and the others followed the confessions of Brother Hei and others to arrest the hidden members of the Meridian Society within Lingshan Town, but these members of the Meridian Society who were captured one after another, to put it bluntly, are just like Cai Yongmengzi and the others, they belong to the employees of the Meridian Society.

A week later, the successive murders in Lingshan Town were all solved, except for Brother Hai and Peng Xuan's whereabouts unknown, all the members of the Meridian Society hidden in Lingshan Town were wiped out, and Tang Tian didn't bother to pay attention to the follow-up legal trial process, he still had more important things to do.

On the way back to Angang City, Tang Tian had been silent, thinking about the batch of medical equipment in Cai Yong and Mengzi's house.

According to Brother Hei's confession, only a small part of the batch of medical devices was used for treatment and physical examination of the abducted girl in the cave, and most of the rest of the equipment was only temporarily stored in the cellar of Cai Yong's house.

Tang Tian always felt that there was another hidden truth in this, that Hai Ge's identity was probably not just the person in charge of the Meridian Society in Lingshan Town! But at present, Hai Ge's trace was nowhere to be found, and the source of that batch of medical equipment could not be found.

Qu Liuqiao, who was driving, had already noticed that Tang Tian was in a bad mood, and wanted to open his mouth to persuade one or two, but he felt that unless there were new clues in the case, Tang Tian's mood would not be better.

After returning to Angang City, Tang Tian plunged headlong into the file, and he made a copy of all the information of the people involved in the case in Lingshan Town, trying to find out some overlooked commonalities.

But the result disappointed him, among all the people involved, except for Cai Yong, Mengzi, and Yang Wenliang, whose life trajectories overlapped, the other people involved in the case had nothing to do with each other before, and the only thing that could bring these people together was the cave in Lingshan Town.

While Tang Tian frantically flipped through the dossier, the rest of the Special Investigation Bureau was not idle, and with the identification results of the Nanshan County police on that batch of medical devices, they ran almost all the companies and enterprises in Angang City that were involved in medical devices, trying to find clues that the police had not yet found from these people who were professionally engaged in the sales of medical devices.

After visiting and investigating, Qu Liuqiao has a more detailed understanding of this batch of medical devices. First of all, these medical devices are very widely used, and many medical methods that are still in theory in the world need these devices as hardware support in order to continue to study and tackle key problems.

Secondly, the high degree of precision of this batch of medical devices is scary, although there are many domestic manufacturers who have the ability to produce this degree of precision, but they will never sell this degree of precision medical devices to private individuals!

That is to say, if the manufacturer of this batch of medical devices is in China, even if the production batch number of medical devices with this precision is polished, the manufacturer's production records and sales records can be compared to find the source!

After learning this, Xiang Yu immediately decided that Jia Zuozhen would continue to visit several other medical device sales companies, and Qu Liuqiao asked the domestic manufacturers that have the ability to produce similar precision equipment, and Xu Zhiwei cooperated to contact the manufacturer to obtain production records and sales records for comparison.

This workload is undoubtedly huge, Qu Liuqiao and Xu Zhiwei were busy for three whole days, but the comparison results are frustrating, every medical device with similar precision, can be found at present, and the major manufacturers have also re-counted the inventory at the request of the police, and the final conclusion is that the inventory plus the number of sales, and the number of production is no worse!

"Now it is basically certain that this batch of medical devices is by no means a domestic factory!" Qu Liuqiao dropped the thick sales record in his hand, and his face was very helpless.

Xu Zhiwei also shrugged his shoulders, this kind of result is obviously not willing to be seen, because it means that the Meridian Society may have a hidden smuggling channel, otherwise this batch of medical devices should appear on the import record of the customs.

"Do you want to go down to investigate?" Xu Zhiwei asked weakly, he felt that continuing to investigate would be a bottomless pit, and there was no point at all except wasting police power and doing useless work.

"I want to check!But how to check??!" Qu Liuwan was a little annoyed, the Meridian Society's literacy in cleaning up traces was too professional, and it once made her a little suspicious, whether she was really playing with ghosts?

At this point, Qu Liuwan suddenly thought of Tang Tian, and immediately turned his head to Xu Zhiwei and asked, "What about Tang Tian? Don't tell me that he has been studying the dossier for the past few days?"

"Uh...... , it should be, yes?" Xu Zhiwei didn't know how to answer, he also felt that Tang Tian had been a little stunned these days, just like the nerds in school back then, he plunged headlong into books and couldn't extricate himself.

Qu Liuwan heard Xu Zhiwei's words, and his heart was even more depressed, worried that Tang Tian would burn his body if he continued like this, so he immediately walked quickly towards Tang Tian's office.

When Qu Liuwan pushed open the door of Tang Tian's office, Tang Tian was still sitting behind his desk, reading and studying the thick file on the desk, not realizing that the door was pushed open.

"Are you going to die?" Qu Liuwan saw Tang Tian's appearance, angry and distressed, immediately walked up to him, and dragged him out without saying anything, "I don't want to talk nonsense with you, honestly go eat something with me, and then go back to the dormitory to sleep well! Investigating the case is not your business alone, you will have an accident if you go on like this!"

Tang Tian was forcibly dragged out of the door by Qu Liu, but his head was still full of dense written records, he always felt that there must be something hidden in those files, and he was not completely without harvest in the past few days, the investigation records about Yang Wenliang's identity show that when Yang Wenliang committed the crime, he was said by witnesses to look crazy and suspected of having mental symptoms. Tang Tian didn't think it was an accident or a coincidence!

It's just that these things lack substantial evidence to support them, so Tang Tian simply didn't tell Qu Liuqiang, but just adjusted his mentality and went to the cafeteria to eat something with her.

"What time is it? You're going to eat? I'm going to find it all the time! I thought you were going out on a date!" Before the two finished eating, Xu Zhiwei happily hugged the laptop and came over.

"Old Xu, you haven't gotten rid of this nonsense, why do you still have the habit of chewing the root of your tongue?" Tang Tian was full of black lines, he felt that Xu Zhiwei was purely underwhelming, and he would be honest after cutting it.

"Hah, I'm kind enough to help you make a small program, as far as your dog's virtue of biting Lu Dongbin is concerned, I think it's better to delete it!" Xu Zhiwei was very confident, he shook the laptop in his hand triumphantly, "It can automatically identify data from various databases on the Internet, and find relevant information according to keywords! I also opened up some permissions for it to the account of the Special Investigation Bureau!"

Tang Tian originally wanted to pout and taunt a few words, but when he heard Xu Zhiwei's words later, he suddenly became calm, "Don't mind!

Xu Zhiwei smiled, motioned for Tang Tian to move the dishes on the table away, and then put down the notebook and showed them it, he randomly typed a word on the keyboard, and then activated the search function to search in the database of the Special Investigation Bureau.

It only took less than three minutes, sorted by the frequency of keywords, and dozens of related materials appeared on the page of the Mini Program.

"You see, the top of the list, is the keyword with the highest frequency of occurrence, click on the triangle symbol next to it, is to search for similarity in other materials containing keywords, just like this......" Xu Zhiwei said, manipulating the mouse to click on the triangle symbol next to the entry, the search program started again, and the page was refreshed again after half a minute, and the previous sorting page became a double row, the left row is sorted according to the frequency of the keyword, and the right row is the data name with a high degree of similarity with the left.

Tang Tian's eyes immediately lit up, this thing was definitely a good thing! Not to mention anything else, if he had this thing for a long time, why would he have to toss and turn in hundreds of thousands of words of data files for several days?

With such an artifact, Tang Tian was completely hungry, and he didn't care about Qu Liu's repeated instructions to let him go to sleep first, and as soon as he picked up Xu Zhiwei's laptop, he ran towards his office.

Looking at Tang Tian's back, Qu Liu's weak gaze changed several times, and when it finally landed on Xu Zhiwei, it already contained killing intent.

"Eh, that Sister Qu! You can't blame me!" Xu Zhiwei, who realized it later, found that he was in big trouble, and hurriedly tried to explain with a bitter face, but it was too late.

Just when Tang Tian happily used the applet to search the database, Xu Zhiwei was dragged to the fighting training room by Qu Liuqiang, which was called to help the weakest Xu Zhiwei improve his self-protection ability, which was actually exercising his ability to resist blows......

Not to mention that Xu Zhiwei was beaten and his nose was blue and his face was swollen, but Tang Tian was staring intently at the laptop screen with a coffee cup, and as the filtered information gradually emerged, his face became more and more excited!

Three hours later, Tang Tian gathered all the information screened out, stuffed it into the USB flash drive, and pushed open Xiang Yu's office door with a breeze.

"You haven't slept yet?" Xiang Yu was a little surprised, he felt shocked when he saw Xu Zhiwei's miserable appearance, and he thought that after cleaning up Xu Zhiwei, Qu Liuqiao would force Tang Tian to rest!

"I'm not sleepy!" Tang Tian directly ignored the surprise on Xiang Yu's face, he walked quickly to Xiang Yu's desk, plugged the USB flash drive into Xiang Yu's computer, and snatched Xiang Yu's mouse with his hand, "This is what I just turned out of the database, among the people involved in the Lingshan Town case, Cai Youwei, Yang Wenliang, Cai Yong, and Mengzi have all been treated in a psychiatric hospital on the outskirts of Angang City! I don't think it's accidental!"

Xiang Yu didn't feel anything at first, but as Tang Tian called up the information in the USB flash drive on the computer, his face became more and more solemn.