In response to the push, the heavy iron door that had been silent for many years slowly opened with a piercing "squeak" sound.

As the door opened, a wave of turbid air rushed to his face, and Long Yun immediately took a few steps back like lightning and watched cautiously behind the oxygen mask.

After waiting in place for a while, looking down at his wrist, he didn't see any change in the color of the combination test strip, and the chemical reagent used to detect ionizing radiation did not turn black, so he slowly took off the respirator, but as soon as he smelled the dusty turbidity wafting from the building, he couldn't help frowning and had to put the oxygen mask back on.

Sure enough, unlike the space in the "black wall", this building that doesn't look big is really airtight.

But what exactly is this building used for?

However, this seemingly small building, even if it has a ventilation system, must have completely failed on the night of the tragedy, once the fan drive is lost, the whole building becomes a confined space isolated from the outside atmosphere, and the air inside will not necessarily become a situation.

Of course, there is another possibility, that is, the building was not designed with any ventilation system in the first place, but was originally completely airtight, so it was not used for human use, but for storing or handling something.

The foul air forced the highly alert Long Yun back, but he still couldn't figure out which of these two possibilities would be one of them.

From entering the "dead city" to the present, in fact, it has only advanced dozens of meters from the foot of the "black wall". What he saw and heard was really completely unexpected by Long Yun. The mystery in his heart was not only unsolved, but he also encountered a strange scene that made people startle and inexplicable; Now facing an open side door to the building. Long Yun is no longer speculating about the situation inside, and the most direct solution now is of course to enter and take a look, although this also means facing unknown threats.

Peeking in through the open side door of the building, the light could only shine on a small part of the inside, and nothing could be seen.

After making sure that the air composition in the building was basically normal, only that it had a hint of peculiar smell due to the fact that it had been closed for too long, Long Yun slowly returned to the "black wall" gate with a blowtorch, and he rummaged through the pile of tools stacked like a small mountain. Scooped out the gas mask, filter, stuffed a bag of calcium carbide, a few bottles of drinking water and compressed biscuits into the backpack, put in some tools, and then pulled out a short, lightweight AKS74 short assault rifle.

Ready to go deep into the interior of the building, Long Yun even dragged out a small pulley, he pushed the bearing "creaking" pulley back and forth between the tool pile and the "building in the building" several times, moved the small diesel engine, transmission mechanism and flywheel cutter into the metal door of the building, and found a very hidden place to stack it properly.

Hiding a complete set of cutting tools in the "building within a building", Long Yun did this, naturally he was extremely afraid of the threat to "others".

Since the last time I entered the "dead city" and encountered a mysterious American pilot. Knowing that Viktor Rezenov is not the only superpowered person in this world, Long Yun considered this threat before visiting the base for the second time. Now you have to be prepared for a response.

In this way, even if an enemy lurks in the "dead city" and finds traces of the "black wall", and wants to close the floodgates to trap him inside, he will have a way to get out of it.

As soon as he was ready, he secretly admonished himself to be bold and careful, Long Yun took a deep breath, put on his gas mask, picked up AKS74 to confirm that there was a bullet in the chamber, and began to slow down and search the entire building, inspecting each room and corner one by one along the concrete-paved corridor.

As the investigation progressed, several more "wrecks" were found in the place where the furnishings were similar to the duty room and the rest room, Long Yun immediately understood where the foul smell in the building came from, obviously, in the completely airtight building, the air was not as dry as the "dead city", these were originally the remains of the staff in the base have been completely corrupted, and now only a mottled skeleton with clothes is left, and a large dark residue stained on the place of death.

Carrying a blowtorch to see this scene, he was startled by the skeleton between the light and shadow, Long Yun stubbornly approached to observe, but he couldn't see the original appearance of these "wreckage", so he turned the search focus to the furnishings in the house, but the computers are now all furnishings, and he didn't find some written records similar to logs and diaries in a hurry, and the slightly disappointed young man walked out of the room and continued to move forward, and he soon entered a rather spacious area.

Oh, and here, it's probably the garage area that you see from the outside of the building.

Lifting the blowtorch and sweeping it, he saw that a loading and unloading truck and a dark green off-road truck were parked in the unloading truck garage where the wooden boxes were piled up, but other than that, Long Yun didn't find anything else; As he slowly walked past the piled up wooden boxes, he looked at the spraying information on the boxes out of curiosity, and after a few glances, he was completely confused, and he shook his head slightly and walked past the pile of randomly stacked wooden boxes, and saw a place that surprised him.

"Lifting control zhì room", painted on the outer wall of the cubicle, in Russian, is that right?

Seeing these words at once, he looked down and paid attention to the "ground" under his feet, and Long Yun found that the place where he landed had become a steel material with patterns, which was obviously different from the cement floor in the building; With a vague guess, he looked left and right a few times, and he could vaguely see the structure of this area, if he guessed correctly, this steel platform was a huge elevator.

Elevators, there will be this kind of thing stored zài, that is, there are some other structures under this building?

Although he had guessed before that the core area of the "Dead City" must be underground, the first time he saw the world after the "Black Wall", Long Yun also had a strong premonition, feeling that it was impossible for such a small building to hide the real secrets of the "Rome" base; But when he found the large lift, he was a little confused now, especially after pacing back and forth on the steel lift platform.

The current "Rome" base, all the power facilities in it have completely failed, and of course this lifting machine has become an ornament, do you still have to drag tools to cut?

Besides, even if he drilled a hole, there must be a deep pit under the lift countertop, so would he have to jump directly from here?

If you think about it, you know that this plan is completely unfeasible, listening to your own breathing in the most silent and mysterious building, the "whirring" sound of the gas mask penetrates through the body and goes straight to the cochlea, like a wind box pushing and pulling in the ear; Standing on the platform of the lift where a truck was parked and thinking about countermeasures, Long Yun quickly made up his mind, he left the platform and began to search for the doors on the inner wall of the building, and soon discovered the emergency passage that a large lift would inevitably have.

Yes, since it is a machine, there will always be a time when the energy is interrupted or malfunctioning.

If there is no such an emergency passage, it will be impossible to put people down to repair it, and the people below will not be able to escape, and it is impossible to design it in this way.

Found a fence door that should lead to the emergency passage, and the electromagnetic lock in other places in the building, this door is still an ordinary padlock, apparently the designer at that time was also very prescient, purely mechanical things are still more reliable than electronic and electrical devices, will be used in the emergency access control. An ordinary padlock, of course, this is difficult Long Yun, a pair of scissors directly cut off the lock, pushed open the fence into the compartment, opened an old and slightly rusted iron cover, raised his hand and used a blowtorch to shine down, a black and dark bottomless, vertical passage with iron steps poking out of the side wall is presented in front of him, it seems that there is no way to judge how deep it is.

At a glance, the bottom is not visible, in this case, the acetylene blowtorch has no effect, Long Yun took out a cold flame from his backpack and threw it into the passage tentatively, and after waiting for two or three seconds, he saw that the red flame no longer became smaller quickly, it seems that this roadway is not too deep, that is, about thirty meters.

Well, since the depth is limited, let's go down and see what it is!

From the demolition of the "black wall" to the present, the situation of consciousness sensing has been faintly increasing, so that Long Yun knew that he was probably looking in the right direction, he checked the equipment, confirmed that it was correct, and climbed down the roadway, while paying attention to the movement around him; Thirty meters or so of the vertical passage, after a while he climbed to the bottom, only to find that this was only a rather narrow transit area, right next to the cold fireworks that were about to go out, another black passage entrance was waiting for him.

Continuing to climb downward, with the conversion of one passage after another, thirty meters, plus thirty meters of repeated accumulation, the young man in the climb gradually began to panting, and the surprise in his heart deepened.

From the time he entered the passage to the present, he had stepped on the same place as the transit platform fifteen times, and the length of the passage he climbed each time was about the same, if each passage was thirty-five meters long...... So, he was now five hundred and sixty meters below ground level, and was this passage so deep?

Before, he only cared about counting and climbing hard with a backpack on his back, and suddenly noticed that the situation was extraordinary, and Long Yun felt that the temperature around him had risen a lot, from the cold at the entrance of the building to a little warm, which confirmed his guess from the other hand, that is, he was now extremely deep underground, and he could no longer feel the cold and heat changes caused by the climate near the surface.

Sensing this, Long Yun's curiosity and doubts intensified, but he soon settled on solid ground, and the scene in front of him changed from another passage entrance to a closed fence gate. (To be continued......)