In the next few days, Yang Fan continued to read through the mountains of information.

Fortunately, these materials were all written with calligraphy pens. Although the information seemed to be a lot, Yang Fan could only read more than half of it at his browsing speed.

Looking at Yang Fan who was quickly flipping through the information, Li Junxian shook his head, what is this guy doing?

With such a fast browsing speed, you may not even be able to see the content clearly, let alone find evidence or clues from it.

I looked out the window and saw that it was evening again. It was already the fifth day. It seemed that I still had nothing to gain.

Li Junxian sighed and said: "Brother Yishan, it's okay if you can't find any clues. Let's rest first."

"If you still can't find the person behind the scenes by the end of the year, I can just plead guilty to His Majesty. Your brother will not be harmed."

"Besides, these materials are messy. They are just daily records. There are no useful clues at all."

"Even if there were, it would be impossible to find useful clues from so much information at once."

What Li Junxian said is correct.

If you are an ordinary person, trying to find something useful from this massive amount of information is like looking for a needle in a haystack.

Qin Huaidao, who was sitting silently aside, was also not optimistic. He was the most aware of the amount of information in these materials.

Since the investigation into the ambush, Qin Huaidao has not been home and has worked until late at night almost every day to read through these materials.

Even so, he was so dizzy and confused that he couldn't find a clue at all.

Although Qin Huaidao admired the Zhongyi Hou who was both civil and military in front of him, he did not think that Yang Fan could find evidence or clues immediately.

However, after reading most of the information, Yang Fan was confident. From these information, he saw a pattern.

After putting down the file in his hand, Yang Fan said confidently: "Have you discovered that people who buy crossbows from weapons supervisory officials and craftsmen actually have one thing in common."

Li Junxian was slightly startled: "What do they have in common?"

Qin Huaidao also looked puzzled.

Could it be that the Marquis has really found a clue? This is incredible.

And I haven't even finished reading these files, so I dare to be so sure. It's incredible, but it's more of an expectation.

I saw Yang Fan saying eloquently: "These people who buy crossbows don't know each other. Isn't it strange?"

Li Junxian and Qin Huaidao were confused. Isn't it normal that these people don't know each other?

Yang Fan didn't keep them waiting for long, and explained with a smile: "It won't be surprising if you have heard of the small world theory and spider web architecture."

The small world theory is also called the six degrees of separation theory.

To put it simply, for anyone living on the planet, there will be no more than six people between you and any stranger.

In other words, you can get to know any stranger through up to six people.

The spider web structure means that as long as there are people involved in social activities, whether they know them or not, there is actually an invisible thread connecting them to each other.

By the same token, this invisible line can be found in the file through this theory.

Following this line, even if you can't find the person behind the scenes, you're not far away.

Of course, why Yang Fan was so confident was because these evidences further corroborated the results of Wu Meiniang's original Meihua Guard investigation.

Now Yang Fan only needs to use this theory to guide Li Junxian and Qin Huaidao to pursue this aspect.

Although this theory is somewhat untenable in ancient times with information congestion.

But it is still possible to apply this theory to Chang'an, a city with a population of only one million.

While Li Junxian was still confused, Qin Huaidao's eyes lit up and he asked with some uncertainty:

"You mean, since these buyers don't know each other, there must be an invisible thread connecting them. Otherwise, it would be impossible to explain that these crossbows are gathered together."

"As long as we find people who have been in contact with this group of people, we can break through from here and find the person behind the scenes."

Yang Fan snapped his fingers and nodded in agreement: "You can teach me, my young master is really smart. He immediately thought of the idea."

"No matter how many times these people resell the crossbows, it will never change. As long as you find out the connection between them, you will definitely be able to find the person behind the scenes."

With that said, Yang Fan pointed to the piles of files on the books and continued: "Don't think that these seemingly messy things are useless. In fact, all the answers are here. What we have to do is sort out the clues.

"

"These files contain records of the places they visited and the people they met. Can you think of anything?"

Li Junxian looked confused and a little confused.

But Qin Huaidao fell into deep thought, but there was still a little fog in front of him that he couldn't get rid of, which made him a little entangled.

Looking at Qin Huaidao's appearance, Yang Fan secretly thought, this kid is really talented.

If you are an ordinary person, you may still be confused by such an advanced theory, such as Li Junxian.

But Qin Huaidao seemed to have caught something. Yang Fan didn't mind training this young man, so he said to himself:

"I just told you about the small world theory, so next, I will teach you how to do data screening."

Seeing that Yang Fan really had a solution, Li Junxian said anxiously: "Brother Yishan, don't be too pretentious and tell me quickly. However, there are thousands of pieces of intelligence on the table. This data is really too big. How can we quickly screen it?

"

Yang Fan chuckled: "Brother, don't worry."

After saying that, Yang Fan stood up and asked someone to clear all the information on the table and set it up as a blackboard.

He also asked Qin Huaidao to arrange for a dozen scribes to list the information of people who purchased bows and crossbows, and even made a general plan for their activities.

Seeing that the whole check-in room was in a mess by Yang Fan, Li Junxian felt that he was fooling around by not choosing Yang Fan?

He knew very well what this brother was capable of doing.

Could it be that this person was bored and couldn't find any clues, so he just messed around?

Li Junxian looked at Qin Huaidao who was busy all over the place and curled his lips: "Brother Yishan, this is such a stupid method. If you want to copy the contents of the file, it will take at least ten days!"

Yang Fan ignored it and explained while giving instructions:

“It’s actually very simple to summarize from massive amounts of information and find the patterns.”

"This information seems disorganized, but in fact what we are looking for is just some information that has commonalities."

"For example, at least two or three of these people have met one person, or they have gone to a certain place, or they have friends in common. We only need to pay attention to these commonalities."

"Through data screening and combined with the small world theory, it is easy to find some seemingly unrelated people or things, but they are actually closely related!"

This retrieval method that was often used in later generations can be said to be known to everyone.

The reason why modern intelligence organizations can quickly collect all kinds of intelligence from hundreds of millions of information is classification.

Look for patterns from the target person’s daily habits, living habits, and people they come into contact with, and finally find common clues through the summary of information.

In fact, the core of so-called data screening is very simple, which is to give up attention to causality.

Instead, select connections between information.

With such an advanced method, it is really not too simple to find some commonalities among thousands of pieces of information.

A few hours later, Li Junxian and Qin Huaidao were stunned.

The crossbows sold from the weapons inspectors were resold more than a hundred times.

But in the end, there were only five people who came into contact with crossbows. According to the movements of these people and the people they came into contact with, they were clearly recorded on the large table, making it clear at a glance.

After peeling off the cocoons layer by layer, these people all went to Cui's Restaurant and had contact with Duan and Cui Yongjian.

After compiling the data, all the information points to Duan and Cui Yongjian. This is no longer explainable by coincidence. The two must be inseparable.

Yang Fan smiled slightly and said, "Brother, you should be familiar with these two people, right?"

Li Junxian looked a little ugly: "Of course..."

Xin said, it seems that they have no reason to ambush His Highness King Wu, right?

But what Li Junxian expected was that the person he had to deal with was not Li Ke.

Qin Huaidao suddenly realized.

It turned out to be them!

I had my doubts at first, but I never thought that the Duan family and the Cui family would really be involved in this."

Besides, this is a huge thing!

Who dares to catch them for interrogation easily?

Qin Huaidao was worried for a while: "Master Marquis, General, this involves the Baoguo Duke's Mansion and the Cui family of Qinghe. What should we do?"

Yang Fan waved his hand indifferently and said, "We will find out after we capture them and interrogate them."

Li Junxian said with a cold face: "Let's wait until we report to His Majesty tomorrow before arresting people?"

Yang Fan held his tongue, then stretched out, touched his belly and said, "Find some food first, and then quickly set off to capture the suspect..."

"The reason why we didn't dare to arrest them for interrogation before was because there was no evidence. Now all the evidence points to them. Even if the Duan family and the Cui family want to protect them, they can't be saved!"

Li Junxian looked at the dark night outside again, and said with a wry smile: "Brother Yishan, it's already three o'clock in the morning, how about arresting the suspect at dawn tomorrow? There's no rush anyway."
To be continued...