Wang Ningyuan turned around and covered the gusset at the entrance of the cave, and the ceiling suddenly fell into darkness, and only the faint smell of dust and mildew on the tip of his nose and the cool breeze could be felt.

"Smack!" He pushed the flashlight on/off, and a pillar of light lit up, illuminating a small area with a faint circle of light.

Wang Ningyuan followed his last memory and moved the light towards the source of the airflow, and sure enough, a boxy hole appeared not far away.

He carefully climbed down the steel pillar, also listening for the movement of the toilet below, lest anyone come in and notice the cat overhead.

The square opening is connected to the ventilation duct of this building, and the ventilation duct of some large buildings can even accommodate two people crawling side by side, this pipe opening is a little smaller, but Wang Ningyuan has no problem climbing in.

He struck the light of the flashlight in front of him, and most of his body quickly burrowed into the pipe.

It is also pitch black inside, because the overall building of the building is rectangular, therefore, the pipe that Wang Ningyuan drilled into is quite long, and there are some other passages on both sides, and the whole ventilation pipe rises and falls, left and right, some places are connected by pipes, and some places are pure ceiling space, which is not inferior to the huge project of the building.

After entering the pipe, his clothes were suddenly stained with a layer of dust, and Wang Ningyuan did not act immediately, but began to deduce the next place where the pipe would lead according to the direction of the toilet where he was.

"If you go straight, after climbing through the pipe, you should arrive at the ceiling of a corridor next to the toilet, and on both sides of the corridor, in addition to the prison cell and confinement room, there is also a prison guard duty room, an item storage room, and an interrogation room on this floor." Wang Ningyuan bit the flashlight with his mouth, supported his two arms, and began to crawl carefully in the pipe.

In a short distance, he only walked more than ten steps, but he was stunned for a long time, sweating profusely, and finally reached the end of the pipe.

The exit was open under the pipe, it was still black, and after Wang Ningyuan was sure that the light would not leak, he used a flashlight to shine below, and the person climbed out.

As he moved, a thick layer of dust kicked up, and he quickly covered his mouth and nose to suppress the urge to sneeze.

"Looks like we should have a wet towel next time." Wang Ningyuan secretly screamed that he had made a mistake, and carefully stepped on the thick steel pipe below.

This is the space above the ceiling of a corridor on the floor, between the ceiling and the cement floor, there are all kinds of pipes and lines, many of which have been aged, and the pipes are also rusty, and a rusty block can fall off if you touch it slightly.

Wang Ningyuan was half-squatting, and the whole person was like a nimble tanuki, climbing on a pipe or steel frame, his perception was exerted to the limit, so as not to alarm the prisoners or police below if he made any mistakes.

Fortunately, the prison cells below were located, and at this time most of them were empty, and the prisoners had gone to the cafeteria, and he passed without any problems.

"Hey, there's no way ahead." In the ceiling space, after climbing for a while, Wang Ningyuan swept the flashlight and found that there was a wall in front of him blocking the road, and there were some holes in the front for the line to pass through, but people couldn't get through.

"It's a load-bearing wall!" Wang Ningyuan patted the wall, groped around again, and found that it was a whole wall, except for the iron gate that opened below.

He had climbed to the end of the corridor of the cell, where there was an iron door that was embedded in the load-bearing wall, and beyond this door was the area where the guards lived, and then down the stairs to the first floor. (Note: If there are doors and windows, it is not necessarily a load-bearing wall!) ）

"[***], it was sealed." Wang Ningyuan patted his knee depressedly.

What to do? It's hard to jump, but even if you go down, the door is locked, and you can't get out! Wang Ningyuan sat down on the pipe depressedly.

"Squeak!" At this moment, a big black mouse suddenly sprang out of an unknown corner, startling him.

The big mouse squeaked, ignoring the big living person in front of him, brushing twice and then retreating into the darkness.

Wang Ningyuan's heart moved, and he moved the flashlight and shone it over.

The big rat was illuminated by the light, and did not show any panic, but stopped, staring at Wang Ningyuan with faint and shining eyes recklessly.

"This rat in prison is so fat!" Wang Ningyuan watched in amazement as the rat twisted its fat body and rushed into the pipe on the side.

"Huh?" He had an idea that although the load-bearing wall in front of the corridor was basically sealed, it didn't mean that the entire wall was not notched, because each room was connected by ventilation pipes, and it would be good if it entered the next room through the pipes and then went around through the pipes in the room.

Wang Ningyuan suddenly opened, and under great joy, he hurriedly followed the mouse into the pipe.

"Whew!" A cool gust of wind blew out of the pipe, and he shivered and was stunned.

"Why is this wind so cold?" At that moment, Wang Ningyuan had the illusion of being in the ice and snow, cold to the bones, it stands to reason that his current physical fitness is not very afraid of the cold.

Wang Ningyuan had a bad premonition in his heart, but there was no other way at this time, he gritted his teeth and crawled inside.

The cool cold wind blew out from time to time, crawling through the pipe of a wall, and in this short distance, three gusts of wind blew out of the pipe, making Wang Ningyuan's hands and feet stiff.

"Up." In desperation, Wang Ningyuan began to stiffly drive the spiritual power seeds in his body to release spiritual power, wandering in the meridians, he was running very slowly and carefully, because he still couldn't control this power.

The effect of spiritual power was obvious, and soon, the temperature of Wang Ningyuan's body returned to normal values, and the cold wind could not have a big impact.

"Squeak!" At that moment, the cry of the rat was suddenly heard in front of me, and the sound of claws digging into metal pipes was terrible and painful.

This is clearly a scream before the temporary! Wang Ningyuan was startled, sped up, and carefully turned the corner of the pipe.

The pillar of light had passed, the rat's cry had disappeared, and it was dark ahead, and the cold wind seemed to be stronger.

Wang Ning was puzzled and held a flashlight to shine back and forth, and finally found something wrong.

The darkness in front of him didn't seem to be due to the lack of light from the flashlight, but from an unidentified object in the middle of it.

Wang Ningyuan's muscles tightened, and he tensed his body to make a defensive posture, although he could crawl people in the pipe, but he couldn't use his fists and feet, so he could only be careful.

Approaching the fog little by little, the faint smell of blood drifted along with the cold wind, and Wang Ningyuan finally found the trace of the mouse.

To be exact, the rat had turned into a dry corpse, lying in front of the fog, and the cold wind was raging in the pipes, all of which seemed to be whistling.

Wang Ningyuan found out that this is the junction of several pipe mouths, and the air flow is extremely strong.

"Ahh It's not good here! At the same time, there was a sudden movement below, the rapid breathing and footsteps of a man and a woman!

ps: Khan, all ask for such a high update! Well, this period is the exam month, and the exam will be taken intermittently until the end of January, but after surviving the accounting and macro exams on the 17th and 19th, I will speed up the update! Strive for about 5,000 words!

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