Chapter 981

"It's not strange for people from the late nineties to have made money, struck it rich, and achieved success by now. However, this list you asked Wang Wang Chuanxing to compile is indeed a bit interesting."

Liu Liu Jinghui was quite interested in the new plan proposed by Jiang Yuan.

He and Jiang Yuan were both people who had investigated many cold cases, so everyone understood that the key to investigating cold cases is not to re-walk the path taken by predecessors. Even if your technology is very good and your reasoning ability is very strong, after so many years, can you definitely do better by walking the path taken by predecessors again?

Making undercooked rice is the norm.

Especially in criminal cases, many cases don't have a definite conclusion even at the end. If the found killer truly doesn't admit it, how can you prove that what you handled wasn't a miscarriage of justice?

Time will cause evidence to vanish; it will not only eliminate evidence proving the killer's suspicion but also eliminate evidence that could prove the innocence of the innocent.

Therefore, many times, investigating cold cases requires finding angles that predecessors haven't taken.

New angles, new routes, and possibly new evidence—this is a relatively good investigative plan. Of course, it doesn't necessarily mean the case can be solved, but such a method is already considered quite good for a cold homicide case.

The "struck it rich" plan proposed by Jiang Yuan is a new angle. Its core is actually very simple: the so-called "whoever benefits is the mastermind."

This is also one of the most commonly used reasoning strategies in administration; there are hundreds or thousands of papers and monographs on the core and specific analysis, but in actual application, it is not that easy.

Liu Liu Jinghui liked Jiang Yuan's "compromise" on the reasoning style.

Liu Liu Jinghui carefully read the list provided by Wang Wang Chuanxing, then clicked his tongue twice and said: "You really can't say that. People from the capital in the late 90s who are still alive today don't have bad conditions. The worst are those who didn't buy a house; as long as they bought a house, they have at least a net worth of several million. But there are indeed some people whose conditions are better than others. Much better."

"After all, it's been over 20 years, and there are always some people who have sunk."

"Well, this is also a bug in your plan. If some people rose up and then sank later, how do you count that?"

Jiang Yuan pondered and said in a probing tone: "It doesn't necessarily have to be how they are now. We should pay more attention to those who started their business a few years after the incident, especially around the fifth or sixth year."

Liu Liu Jinghui nodded: "That's a line of thought. Ordinary criminals can't wait for you to fulfill a promise ten years later; three to five years is long enough. However, let me update this line of thought of yours."

"Please go ahead."

"Anyone who has ever risen counts. As long as their income has surged or they have struck it rich, regardless of the reason—whether it was inherited, gained from stock speculation, or picked up somewhere—we don't care about anything. Anyway, Jianmen Academy is only such a small place; anyone who has ever been rich is listed as a suspect."

"Okay." Jiang Yuan expressed agreement.

"Those who got promoted also count."

"Well." This point is relatively sensitive, so Jiang Yuan didn't say much.

Liu Liu Jinghui threw the list back to Wang Wang Chuanxing and asked him to continue modifying it.

Wang Wang Chuanxing was already performing thorough, refined operations at this time; he pulled out the entire list of residents in Jianmen Academy, handed it to different people in categories, and listed everyone's economic status, career development, and life trajectory over the past twenty or thirty years.

There were hundreds of residents in four buildings in total, and it was divided among more than twenty police officers to handle; it was screened clearly in no time.

There are many points that can be screened here. In addition to bank deposits, securities accounts, real estate, and vehicle certificates, everyone's monthly phone bill amount, transportation expenses, whether they have traveled in business or first class, whether they have experience studying abroad, children's education expenses, and elderly medical expenses, etc., can all be used as a background.

From the police's perspective, ordinary people are actually all the same; the money they can spend is only so much, and it is basically spent on the essentials, with occasional spending in some special places.

But if it is a hidden rich person, they will often spend extra money in some inexplicable places, or rather, they don't actually care much about the cost, and even intentionally spend more money in some inconspicuous places. And as long as similar items appear, the police will naturally pay more attention.

Soon, a list of more than 30 people was placed back on the desks of Jiang Yuan and Liu Liu Jinghui.

Liu Liu Jinghui and Jiang Yuan read them separately, also accompanied by case files and background data from the computer.

After just a while, Liu Liu Jinghui crossed out the 10 people in the first row and said: "Businessmen, and a few who embezzled money, but it doesn't feel like the people we are looking for."

"The person we are looking for must know how to use a flying claw." Jiang Yuan frowned and said: "I don't know what kind of person could still learn this thing by the 90s. By the way, this is still a young person, under 30 years old."

"Well, but you can't screen by age directly; the money isn't necessarily spent by themselves. Furthermore, it's not necessarily a resident; it could also be a resident's family member or someone else." Once Liu Liu Jinghui started thinking, he thought of more.

Jiang Yuan thought for a moment and said: "I think this murder case is less and less like a death case caused by burglary. From this perspective, if it wasn't caused by burglary, then the killer obviously had a greater reason and more benefits to do this."

Liu Liu Jinghui said "Well" and said: "I understand what you mean; you want to build a list of people who benefited from killing Zhang Zhang Xiaoming more directly. This direction is indeed feasible. Consider this direction first; if it doesn't work, then talk about other investigative directions..."

As Liu Liu Jinghui spoke, he began to summarize: "First, the killer paid a price of 500 yuan to find someone to pick the lock. This shows that he had money in his hands. Second, he took away thousands of yuan in money and items from Zhang Zhang Xiaoming, and even split it with Wang Wang Futing afterward, which is very generous. From these two points, the killer's economic status should be relatively well-off."

As Liu Liu Jinghui spoke, he began to look for people on the list.

With a list of more than 30 people, plus factors like age, two names were quickly pulled out by Liu Liu Jinghui.

"Investigate them first." Liu Liu Jinghui didn't bother with any re-checks; now that resources were abundant, he only feared there would be no clues to investigate.

However, the young people from over 20 years ago are now quite old. Fortunately, there are few migrants in the capital, and these two people are still living locally, so it is not difficult to investigate.

Several police cars drove out lightly; calculating the time, it is estimated that it will take several hours to get results.

Liu Liu Jinghui patted the case file in front of him: "Since we're here, why don't we go through Zhang Zhang Xiaoming's workplace like this too."

He felt that this method was quite good, and there were many restrictive conditions. Once it was really gone through, the actual number of people on the list wouldn't be many, and the burden of investigation wouldn't be heavy.

Jiang Yuan naturally didn't object, so the members of the entire cold case task force were mobilized again to find the factory's list, distribute it to individuals, and investigate one by one.

Compared to before, the current process is even faster.

Moreover, compared to the colleagues living in Jianmen Academy who were mainly government cadres, the conditions of ordinary factory workers were often not good. Those who could reach the level of "striking it rich" and "achieving success" were very few. With a list of more than two thousand people, the final number pulled out was only a few dozen, making it even more convenient to investigate.