It’s just that this lunatic hobo is too good at creating an atmosphere. Originally, Ning San’s tense nerves were horrified by his words. The situation is not safe. The black figure who kidnapped him doesn’t know when he will do it again. He came out, and he was in an abandoned underground drainage system connected to the Jialing River, surrounded by a crazy tramp.
In fact, life is impermanent.
Ning San moved his hands and feet a bit and stood up. He felt that this tramp was very difficult and he couldn't really treat him as a lunatic: "Do you know where the exit is?"
The tramp frowned and stared at him, "You can't get out."
Ning Sandao didn't understand what he meant, and asked again: "How should I get out?" He thought that since this tramp and himself can appear here, there must be an exit.
The tramp still replied decisively: "You can't get out."
Ning San looked squarely at the unkempt homeless man, and the homeless man stared at him with both eyes open. Ning San said, "Then how did you get in?"
"You can't get out," said the tramp.
Ning San felt that his patience was going to be exhausted by the tramp, and he was in a dangerous place and could not delay any longer, so he no longer cared about the weirdness of the tramp, whether he understood it or not, and said to him: "You It can be regarded as saving my life. If there is a chance to see you again in the future, I will repay you at that time."
The homeless man was ignorant, grinned and gave Ning San a kitchen knife in his hand, turned around and stumbled into the darkness, "You have to be careful."
This lunatic always gave Ning Sanyi a strange feeling, but he had no intention of entanglement more, and turned and walked to the other side.
Except for the light just now, the entire underground drainage system was completely dark. He touched his pocket and the phone was still on his body. He couldn't help but laughed. The kidnappers who didn't know it was a ghost didn't even use the phone. Take away. Regrettably, there is no signal. Also, there will be no signal when a train passes through a tunnel, not to mention how deep the underground drainage system is
Turn on the flashlight of the mobile phone and take a photo. The function of the drainage system is to discharge sewage and rainwater in the city, and it is divided and combined. Confluence means that rainwater and sewage are discharged in the same system, and split-flow means that rainwater and sewage are not in the same system, but no matter which system, the common feature is big.
In order to adopt a reasonable force-bearing structure, the underground drainage system adopts a dome-style construction method. There are concrete load-bearing columns more than ten meters high at intervals. The urban underground drainage system is not as big as the tunnels previously imagined. Similarly, it is more like an underground palace, with orderly distributed concrete load-bearing columns, a dome more than ten meters high, and a wide discharge channel. Ning San is holding a mobile phone flashlight and can’t see his head at a glance, and he can’t tell where is the front and the back. .
Since it was not repaired for people to admire, the surface of the concrete is very rough and dim, surprisingly a bit similar to the tomb passage. Ning San never actually went to the tomb, and the tomb in the Jing Clan's Underground Palace was not a standard, and it was not considered a tomb, but I saw it in a TV series anyway, and I knew what it looked like.
It also makes sense. Comparing tomb passages and underground drainage systems are both large projects intended for a century, and they are all built underground. They are faced with similar problems such as geological movement, groundwater infiltration, and plant root damage, so the final effect is shown. It's very similar, and it's reasonable.
This drainage system is connected to the Jialing River. Most of it used to be used to discharge urban rainwater, and most of it has been abandoned now, because the air is relatively dry and there is no sound of water flowing, which makes Ning San a little bit less uncomfortable. Okay. If it is not the sewage system, it is as dirty as it is.
After turning around like a headless fly, three branch drainage channels appeared in front of me. The scale of the branch is not that big, and it can make a good distinction between the front and the back, but it also makes the terrain more intricate.
Ning San thought for a while, turned off the flash of the mobile phone and replaced it with the light of the mobile phone screen. It had to be adjusted to the darkest. There was no way. It seemed that it would be impossible to get out for a while. If there is no light source on hand. , But you really have to die below.
Ning San didn't understand the underground drainage system. He only knew that it would be extremely complicated. While walking forward with the blurry light in front of him, he was thinking about how to get out.
There was rough concrete under his feet, and a drain channel that had already dried up on the side. He jumped down and took a look. There was a layer of black dross deposited underneath, all of which gathered here along with the rain and deposited it.
Ning San took his toes and turned over the black dregs. There were still some dead leaf fragments mixed in. He said that if I were Holmes, it would be fine. No matter what, it would be Qin Feng in Tang Detective. Fragments, distinguish which tree leaves it is, and then take a wide range of samples to find out the type of tree that has the most deposited leaves in this area, and then infer the flow velocity and the flow distance of the leaves from entering the water to the deposition based on the topography , Infer how far their water inlet is from here. Then in my mind, with the air-conditioning, I produced a distribution map of the drainage outlets of Chongqing's drainage system and a distribution map of the types of planting types of green plants in Chongqing streets, and then x + y = Chongqing rainfall during the 50,000 calendar year Asian winter northwest monsoon nuclear reactor The reaction formula is the formation of chlorophyll during the Ching Ming season. Looking for the dragon and dividing the gold, looking at the mountain and the mountain is a key to the core values of socialism, you can easily figure it out that the exit is three meters ahead of the right.
"It's a pity that I am not." Ning San regretfully kicked the black deposit under his foot and continued forward.
The light on the phone screen was not far away, and the front and back were pitch black, and the sound of footsteps spread far away, and the more he walked forward, the more panic Ning San's heart became, because he had already walked no less than four minutes. The fork was over. The place with the largest number of forks had four. He only chose one of them. It would be impossible to go out if he went on like this. Ning Chuan knew in his heart that he would be trapped here sooner or later. He looked at the signal cell of the phone again, and it was still empty. Can he write a will? No one reads it, he thought, who would come here to read his will? Perhaps the drainage system will be restored for one day, and then the body will be washed into the Jialing River. In order to find the identity of the deceased, people may repair the mobile phone in their pocket, and the will in the mobile phone will have a chance to be discovered.
While thinking wildly, Ning San used the kitchen knife given to him by the tramp to mark the concrete. It was really impossible. He could return to the place with lights on the same way, and wait for the kidnappers to come and fight them to death.
He suddenly found that the touch under his feet had changed without knowing when, and the sound of footsteps had become clearer. Ning San looked down and saw that the black scum under his feet did not know when it disappeared, leaving only the rough but relatively clean concrete surface, and the signs of water erosion were more obvious.
Why did it disappear
Ning San couldn't help slowing down and thinking about where the joints were. All the inconspicuous details and changes could be the key to helping him escape. This is the harvest of the past two years.
Because I don't understand the relevant knowledge of drainage system, I can only rely on life experience to judge. The presence of sediments indicates that the flow rate of the water is relatively slow. Where there are no sediments, it does not mean that the water flow is relatively clean. Rainwater has to flow through the streets and drainage pipes. It is impossible to have no debris. It can only be said that the debris has been washed away, indicating that the water flow is relatively rapid.
Ning San was not sure whether this guess was right, but it was better than turning around like a mindless fly. He found a choice direction, no matter whether it was right or wrong, it was like grabbing a life-saving straw. Continue to guess based on experience.
A pressure pump will be built in the drainage system, and the pressure pump will accelerate the flow of water, and the farther the pressure pump is, the slower the flow rate of the water will be. In the central drainage area, pressure pumps will definitely be built more densely. Chongqing is a mountain city. The area with the highest drainage pressure and the most construction of pressure pumps must be mountainous areas. Since the Jialing River area has reached the discharge outlet, there is no accumulation of water pressure, so there will not be too many constructions. Pressure pump.
So... Should we go in the direction of more sediment? (End of this chapter)