Rebirth 78, the beginning of the marriage was broken off by the female educated youth

Late at night, letters of cooperation were sent from the Ministry of Public Security to the whole country.

While waiting for new responses from various places, Li Xiangnan and his colleagues in the task force also re-examined all major cases.

With the new fixed clues, this time the process was very fast. In just two days, three cases from the two lakes and a place in the Central Plains were collected from files across the country. All of them were unresolved cases.

The methods used in these three unsolved cases are almost the same as those in the Dongquan case, and they are of the same origin, but the methods are indeed more sophisticated and more covert.

Eight years ago, a mining tycoon in Xijiang Province murdered his entire family.

There were a lot of details in the file. When Li Xiangnan found it personally, he studied it for a long time and was almost certain that it was the work of Wan Laoshe.

There is a phosphate mine in the local area. When it was first discovered, it was still unknown at the national level and was occupied by a local mining tyrant. The case happened when it was about to be taken over.

This mining tyrant, surnamed Gao, has long been oppressing miners and wantonly withholding their wages.

At that time, the conditions in the mining area were poor, and many worker injuries occurred, which were not well resolved.

Suddenly one day, mine owner Gao and four of his men were found hanging themselves deep in the mine.

The rope used is a steel wire rope from underground mines, and the knot is very complicated.

Plant ash was also found at the scene, but the amount was small and was only recorded as a suspicious point, not considered as direct evidence.

The smell is so faint that almost no one notices it.

What caught Li Xiangnan's attention was that the case investigator had described that someone had used ore to draw a very obscure coiled snake symbol on the wall of the mine, and added a pipe pattern on it.

The local police questioned all the local miners but found nothing.

Because this case involved the nationalization reform of that year, it was reported to the provincial government by the local authorities, and the provincial government then reported it to the ministry. However, the case was never solved and remained an unsolved case.

Another one is a file sent from the two lakes region.

It is said that there was a local family named Jiang who had been running a restaurant business. Suddenly one day, he was found dead in the underground casino he opened, also by hanging.

This time, the murderer used the tassels of the casino's curtains and the mosquito net of the bed in the room to make ropes.

The knot was simple, yet it was perfect. The more they struggled, the tighter it became. When the four people were found, their tongues were hanging out of their mouths.

Almost no plant ash was found at the scene, and only trace amounts of residual components were found in the ventilation vents.

The only thing vaguely connected to the other cases was a scribbled snake pattern drawn on the mirror with charcoal.

At this time, the pipe was wrapped into the snake's body and became part of the head.

Another case happened in Nanhe Province three years ago.

A drugstore owner was accused of selling fake medicine that resulted in the deaths of several children, and was subsequently surrounded in his store.

After the police station learned about this, they asked the store owner to compensate the family.

But the victim's family waited for almost a month, and when the shop didn't open day after day, they agreed to go look for the owner. They didn't find him in the shop, but finally discovered that the whole family, young and old, had hanged themselves in the villa he built.

It was July at the time, and the whole villa was filled with a foul stench, which prevented the family members who came to block the villa from eating for several months.

Naturally, the incident caused a big uproar, and the people in the local county said that the store owner deserved to die and was killed by God.

However, the public security files recorded that the scene this time was extremely clean.

The rope used for hanging was a decorative leather rope from the villa's study, and the knot was tied like a work of art.

There were no signs of fighting at the scene, and no ashes were found, but the police who went to investigate the case said they smelled a strange smell.

The detail that made Li Xiangnan notice that this case was a serial case was that there was a copy of the Classic of Mountains and Seas on the table in the study, and the part about the Bashe was drawn as a coiled snake with its head raised, almost the same as the one in Xu Sheng's cell.

This can be seen from the Dongquan case of that year, to the mine case, the casino case, the pharmacy case, and today's Xu Sheng case.

The murderer's use of items at the scene has fully utilized the environment, and the appearance of plant ashes has also changed from a small amount of ashes to almost no traces.

From vaguely depicted symbols to obscure markings that require great insight to detect.

The murderer's meticulousness, superb technique and strong adaptability are simply astonishing.

Just as Li Xiangnan said, Wan Lao Snake's modus operandi is evolving!

These four unsolved cases, spanning twelve years and spanning the north and south, were noticed by Liu Yansong, a criminal investigation expert in the ministry, because of their common characteristics.

This retired expert came to the department specially when he heard that Li Xiangnan was investigating the case.

Li Xiangnan and Guo Qian happened to be in the department's information room. When Old Liu came in, he saw seven or eight people lying in a pile of information, and his face showed both admiration and emotion.

Few people are as persistent as he is, pursuing the truth to this extent.

"The Mindong Public Security Bureau called me and said that someone was also investigating this case, but I didn't believe it!" Liu Yansong walked into the house, picked up the file on the ground and looked through it.

"you are……"

Hearing the noise, Li Xiangnan and Guo Qian looked at each other and quickly stood up to greet each other.

"Not worth mentioning! Just call me Old Liu!" Liu Yansong waved his hand, his gaze piercing the dim space as he looked towards Li Xiangnan. "I noticed Wan Laoshe during the Mindong case back then. I was still the deputy director of Donghai back then, and I was quite shocked when I heard about this case..."

"It's Senior Liu!" Li Xiangnan was overjoyed when he heard that Liu Yansong knew what happened back then. He quickly invited him in and said, "Senior, please take a seat. Do you know about the case of Wan Laoshe?"

"He's a master! But also a tragic figure! The reason I noticed him back then was because the Mindong Public Security Bureau sent a letter of assistance to our bureau, saying that this Wan Lao Snake might have escaped to the East China Sea and asked us to assist in the investigation. As a result, this contact led me to fall into the abyss..."

Upon hearing this, Li Xiangnan knew that the situation might be more difficult than he had expected, so he quickly stepped forward to light a cigarette.

"Unfortunately, I was only the deputy director of Donghai Public Security at the time and couldn't mobilize too many resources to assist in the investigation. Otherwise, he would not have been able to get away with it for so many years!" Liu Yansong's tone was full of regret when he talked about those years.

Guo Qian sighed and said, "Senior, didn't you ask your superiors for resources back then?"

Liu Yansong smiled helplessly. "How could it be that easy! Handling a case in a different location requires countless procedures to coordinate. After the higher-ups agree, all the procedures must be completed. Sigh... that guy specifically targets local bullies who are difficult to punish legally and have great public outrage. He has a grudge against the former ship tyrant, Boss He, and he couldn't get enough of killing him, so he got involved in this business! He's like a perpetrator who moves from place to place, making him extremely difficult to track down..."

He said this, shaking his head and revealing an expression of extreme pain, "I didn't expect that for these evildoers, killing would become an addiction!"

Li Xiangnan also sighed and clenched his fists, saying, "Senior, the law is strict and there is no loophole. I will definitely catch him!"

Liu Yansong turned to look at Li Xiangnan, pulled out a notebook from his pocket, and said, "Son, these are the notes I took when I was investigating the case. Back then, my conditions were limited, and I really couldn't find any trace of this person. But you are different. The resources you can mobilize are countless times more than mine! The conditions for tracking down the murderer are better now than they were back then! If you want to find this person, you can start with his sister!"

"younger sister?"

Upon hearing this, Li Xiangnan shuddered.