According to records, the coal mine shaft was abandoned many years ago.
The mine shafts are densely packed and highly interconnected.
In some areas, there are still tunnels left over from the War of Resistance against Japan.
The structure is very complex.
Even the tunnels inside the mine are not a single layer, but can be divided into multiple layers.
If a section is cut off and its ends are detonated and collapsed, it is easy to create a complex, enclosed space.
Inside, there was no one to turn to for help.
The suspect's requirements for a hiding place were generally met.
...
Qingshui Town, Mentougou District.
The task force's convoy drove through the last stretch of paved road on National Highway 109.
Then he turned and plunged into a snow-covered path.
The police car drove until there was nowhere else to go, at which point Shen Ting and the others got out and started climbing the mountain.
After climbing along the mountain path for nearly two hours, several long, bald, snow-capped mountains finally came into view.
Abandoned coal mine area in Qingshui Town, Mentougou District.
Their destination.
This place is the most suspicious, so he naturally has to investigate it personally.
Other teams have been dispatched to investigate the other suspected locations.
The mine shafts here have partially collapsed and have been abandoned for a long time, as can be seen with the naked eye.
On the hillside, you can still see a crooked "Safety Production" sign, half-buried in the soil and covered in rust.
The group arrived near the abandoned mine.
A man in his forties or fifties came running over quickly.
He was wearing a faded military overcoat, and his hair looked messy.
It was obvious that they hadn't had time to take care of it before they were sent over.
"Hello, are you Team Leader Shen?"
I am Zhao Si, a forest ranger here, and I have worked here for nearly 20 years.
My supervisor asked me to come over and introduce the situation here.
If you need anything or have any questions, just let me know.
"Fourth Brother, thank you for your trouble."
I'd like to ask, has anything unusual happened here recently?
Shen Ting's gaze swept across the mine shaft; most of the area was covered in snow.
Zhao Si rubbed his ears, which were red from the cold, and frowned, saying:
"abnormal?
There seems to be nothing unusual!
I didn't notice it at all.
Shen Ting nodded and thought for a moment:
"Have you seen anyone coming this way these past few days?"
Or did you hear any noise?
He lit a cigarette and handed it to Old Zhao.
Zhao Si hurriedly took the cigarette, his brows furrowed:
"During the few days I patrolled the mountain, I didn't see anyone."
In this freezing weather, no one would be foolish enough to run this way.
We patrolmen rarely come here.
Not even stray dogs would come to this mine, let alone people...
But speaking of the sound, it was about three or four days ago when I came down from get off work and went down the mountain.
I think I really did hear a booming sound, like muffled thunder!
The sound seemed to be coming from this part of the mine.
Old Zhao recalled:
"I didn't pay much attention at the time, just assumed that the mountain had collapsed or the snow on the mountain had collapsed."
But now that I think about it, that sound really wasn't right.
It's not that boring!
It seems a bit more deafening.
It looks a bit like...an explosion?
Zhao Si also seemed a little unsure.
Shen Ting said urgently:
"Uncle Zhao, please try to recall that voice carefully."
This is very important to us.
Zhao Si took a drag of his cigarette, frowning as he recalled:
"If you ask me to say it now, I really think that sound was somewhat like an explosion."
I used to work in a mine too.
That sound was exactly the same as the sound of blasting tunnels in the mine back then!
However, I was quite far away at the time.
So I'm really not sure.
Shen Ting nodded, asked some questions about the details, and after obtaining a rough structural diagram of the mine's interior, thanked Zhao Si and then led his men to a mine entrance.
He uploaded the mine's structural diagram to the crime-solving group.
Let the three-person search team determine which body part is more suitable for creating a separate space to hide the seven missing persons.
The three-person search team quickly identified four areas and drew up a route to explore the mine.
Shen Ting directly divided the armed police, special task force officers, and local police officers on site into four teams.
They were instructed to search the mine along the routes designated by the three-person search team.
...
The sun was setting, its light dim and yellow.
A cold wind blew through the mountains and fields, its sound like the howl of a wild beast.
The searchlights at the mine entrance cast a long shadow of Shen Ting on the snow.
A briefing came through the headset every ten minutes:
"Group A has arrived in Zone 1 and no abnormalities have been found so far."
"The B group police dog is loitering at the third intersection of Zone 2. Scent confirmation is needed."
"Group C is about to descend into the mine pit at the second fork in Zone 3. The situation inside the pit is not yet determined."
"No anomalies have been found in Zone 4 within Group D..."
Didn't you notice?
Just as a sense of anxiety rose in Shen Ting's heart, the voice of the D group leader, who had just finished his report, suddenly rose again.
The short, sharp voice was tinged with obvious excitement:
"etc!
Team leader, at the third fork in Zone 4, inside the western branch tunnel, a high-frequency cracking sound has just been detected by trace evidence inspection!
A sound similar to breaking glass.
There were also sounds like the plastic casing of an electronic device being violently smashed.
In short, it doesn't sound like a sound that would be found in nature.
The detector detected a spike pulse of 11.7 kHz.
We are searching for the source of the sound and request additional manpower.
"Team Leader Shen, would you like to come and take a look?"
"Okay, I'll be right there!"
Shen Ting, accompanied by backup officers, quickly stepped over the damp coal slag and arrived at District 4.
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