The key to the problem is the curator's office. The white human bone that still lies on the chair behind the huge desk is the key to the problem.

Human beings will die if they are creatures. However, no matter which kind of creature, after the body dies, the nerve center will still survive for a short period of time. Although this survival time is not long. Therefore, from a physiological perspective, living nerves will still issue a series of commands to the body parts they control. Just like a person will feel sore after sitting for a long time, and will feel numb after standing for a long time, the last command issued by the brain before death becomes the basis for the action of the survival nerves. Therefore, some people will curl their bodies when they suddenly encounter huge pain and die. Some people will lose all their ability to move after being violently hit by the head, causing stiffness in the body parts. Some people will have a skewed facial expression after being severely frightened...

However, there is absolutely no way to die, which will turn a living person into a corpse without any life, and still maintain such an inexplicable and strange movement.

Tianxiang carefully checked the dead bone with his legs crossed on the chair and found that there was a hole of the same size on both sides of his head. He was not unfamiliar with such holes, and only after using a pistol to shoot would such damage be caused. It was obvious that this was a person who committed suicide. A pistol that had not been discovered before and fell to the right side of the chair and was covered with dust clearly explained this.

But what Tianxiang couldn't understand was that the suicide man's waist and the part of his left hand against the armrest of the chair were wrapped around a rope that had long lost its toughness. It could be seen that this was a suicide man who was completely fixed on the chair.

Since he was going to commit suicide, why should he fix himself on a chair? Was he coerced or imprisoned? But it doesn't make sense! Since he can get a gun and his right hand is not bound, why don't he untied the rope tied to his body and escape from here? Why do he still sit cross-legged on a wide chair with his legs cross-legged?

Even if it is not Tianxiang who has the sixth sense, any experienced coroner will only have an explanation - this person committed suicide. And it is the kind of willingness.

The last time I came here, Tianxiang didn’t have much time to search carefully. But now it is different. This is where he and his sister live. At least, the secrets here should be known by him. Maybe there are unexpected discoveries in it?

The hand, the dead man's left hand is quite strange. Tianxiang noticed that compared to the fact that the body was only tied, there was a rope for fixing on the left hand of the skeleton. So that the wrist and palm parts were completely tied firmly in front of the armrest of the chair. The result of this was that after the deceased died, even if the nerve center continued to issue unconscious twisting commands on other body parts, it would definitely not have any impact on the already fixed left hand part.

It seems that this is exactly where the suicide person wants to tell later generations to hide secrets!

However, this bone that has been scattered on the surface of the chair has only a sternum tied to the back of the chair and a hand bone that is still fixed by a rope and has not fallen on the ground. What can it mean?

Tianxiang carefully searched for everything that could be regarded as clues between the scattered corpses and the damaged clothes covering it. But he was disappointed. Except for an old and inoperable pen and a heavy metal ring, there was no item that could explain the identity of the deceased.

Disappointed Tianxiang put the dead bones as they were in disappointment and looked at the pen and ring for a long time. After confirming that these things were of no use, his helpless eyes finally fell on the white bone tied to the armrest of the chair.

Wait, something was wrong here! Tianxiang seemed to have something flashed through his mind, and he quickly looked at the rope wrapped around the bone. He saw two ropes tied his wrists and the other tied his palms, so that the five sharp fingertips could only point awkwardly to the ground covered by the carpet under their control.

"That's right! It's here!" Tian Xiang quickly made his own judgment. He leaned over and squatted beside the chair, pulled out a dagger from his feet, and poked it hard at the thick red carpet.

The cut red carpet is not large in area, but a small piece as big as a palm is only a small piece as big as a palm. However, it is enough. Just below it, a floor of almost the same size is highlighted there in a form slightly higher than the surface of other companions. Although the raised part is only a few millimeters, for Tianxiang, who has extremely keen observation, it is enough to make him realize that this part of the wooden board is different from others.

Without thinking too much, Tianxiang pressed his hand heavily. With his understanding and the knowledge gained in the book, such hidden mechanism trigger points are nothing more than a few simple actions such as pressing, pulling, and rotating. Therefore, as long as you find it, it is not difficult to open them smoothly.

"Gaga--" A harsh metal collision sound like the rusty gears rubbing against each other came from the inside of the wall behind the deceased's chair. Tianxiang was surprised to see: as the surface was decorated with beautiful wallpaper and the wall was cracked from it, a low small door that could only accommodate one person's entry suddenly appeared in front of him under the faint light of phosphorus fire.

After taking a deep breath, Tianxiang calmed down and drilled into the black and stubborn door.

This is a cylindrical staircase with a spiral downward movement. Since there is no source of light, it seems quite dark here. Even Tianxiang's eyes, who are used to being in the dark world, can only see everything clearly with a faint light, can only faintly identify the general outline of the stairwell. However, for him, with a keen perception, it is enough. In this way, touching the edge of the wall that is obviously cast with reinforced concrete, Tianxiang carefully followed the guidance of the steps and slowly took cautious and resolute steps down.

The stairs were very long. After Tianxiang secretly counted 564 stairs, the soft soles finally touched a solid hard ground. And about five or six meters ahead, a tightly closed to the outline of the steel gate suddenly appeared in front of Tianxiang.

This is an iron door that was corroded and rusty by the water stains penetrated into the crypt. Tianxiang carefully stroked it gently along all the positions beside the door. He did not find any keyholes, but there was a round groove that was only the size of a finger in the center of the two halves of the door frame, and there was a bump in the shape of a "cross" to touch.

The groove is very small and deep. Tianxiang put his finger in and tried it. The raised cross seems to be able to rotate. If it can be inserted into both fingers at the same time, he believes that he can completely turn part of it. I think this should be the key to opening the iron door!

The iron gate is very tight, and even if Tianxiang uses his strength to push it, it will not move at all. It seems that if you want to enter it smoothly, you must find the key that can open it.

Tianxiang looked through everything on his body, but he couldn't find a tool suitable for opening the door. Even a dagger with a thin blade could not be inserted into it. For a moment, a huge sense of loss enveloped Tianxiang, making him sit down on the wet ground like a dejected person.

"What is this?" Just as the buttocks were in contact with the ground, a clear but not very resistant feeling came from the junction of muscles, clothes and the ground. It was a sense of touch that was only obtained after being sandwiched in it and squeezed the skin.

"Ring! It's the ring that flipped from the dead!" Tianxiang was shocked and turned up from the ground, and hurriedly took out the huge, round metal ring from a hidden pocket on his hip. It was not because of the existence of the ring that made him feel uncomfortable. But he suddenly remembered: In the center of this round ring, there seemed to be a cross-shaped groove of the same size. It seemed to be exactly the same size as the cross bulge on the iron door in front of him.

Pinching the ring part of the ring, Tianxiang carefully extended the ring face into the groove on the iron door and rotated the ring hard, but found that the force of his fingers could not rotate the ring at all. He could not do so, so he could only put the ring into his fingers, then clenched it into a fist, and rotated it hard. After only a slight "click" sound came from the keyhole on the door, a small but very obvious narrow slit appeared in the crack of the door that was originally sealed by iron embroidery. In a vague way, a little faint light was emitted from the inside.

"Oh my God! What is this? Where is this?"

Tianxiang was completely stunned by everything in front of him. If the feeling of being surprised when he accidentally opened the upstairs military warehouse, then the feeling he brought to him after he pushed open the iron door can only be described as fear.

This is a huge underground space. Although it is not as big as that of being out of sight, it is also a spacious and large space. It seems that this iron gate is just a trigger mechanism. Just as Tianxiang pushed it open, a row of low-energy-consuming emergency lights surrounding the high wall emitted a milky white scattered light. Although it was not very bright, it was enough to shine the entire space without any omissions.

Of course, what shocked Tianxiang was not the underground space area, but the items placed and contained in it. They are the things that really shocked.

Two strange vehicles with wide and thick chains, and one seemed to be exactly the same as them, but the square part with a thick and long pipe at the top was hung high on the top of the room by several black iron chains. Only a groove with the same shape but slightly smaller than it was quietly crossed the surface of the car body, revealing piles of inexplicable pipes and many unknown parts.

"Tank! This is a tank! One of the most powerful weapons created by the ancients." Tianxiang thought to himself. He was very familiar with this thing. He had read many related pictures in the pile of military books. Therefore, he could call out its name effortlessly.

Carefully spared these piles of steel without any life, Tianxiang came to the center of the room. There was a thing parked with four rubber wheels below, but at the top was a huge cross-shaped iron piece. Tianxiang was not unfamiliar with it. This seemed to be a tool that could fly to the sky, as if it was called a "helicopter".

Not only these, but there are many parts and guns scattered all over the ground in the corner of the house. Looking along the wall, you can find boxes of half-open bullets and messy shells. Of course, there are also the most common things that can be seen everywhere in the dark world - the bones of ancient people.

Tianxiang carefully inspected all the items he found excitedly and curiously. Even the tank and the plane were carefully fumbled in the cockpit. Of course, there was no result in doing so. In addition to making him a little familiar with the structure inside, it was impossible to start these things smoothly. For too long, the deposition had caused these huge ancient weapons to be eroded by dust and oil. Now, they are at best just a bunch of display items without any life and vitality.

In addition to these, near the wall near the back of the room, there is also a strange device that is raised high by various machinery. From a distance, it looks like a person, with hands, feet, and head. However, all of them are pulled up by arms stretched out from the roof, and they can only be connected by a few thick wires. In ancient books, the name of this thing should be called "mobile armor".

"There is nothing to be used!" Tianxiang silently defined this secret place in his heart. He carefully groped in his hand about a bullet that he had found from the ammunition box. This thing was useless. Although it was full of oil and had good ventilation ducts. However, the large amount of groundwater that penetrated from the roof had caused quite serious corrosion to all metal objects. Not to mention those large machinery, even the surfaces of these small bullets had terrible rust. Some even had the bullets separated from the shell. As long as you gently pull it with your hand, the black powder contained in it was like a pile of sand and gravel without any obstacles, overflowing from it, scattered on the ground, forming a small pile of dust.

"It seems that there has been a very fierce battle here!" This was the second thought that appeared in Tianxiang's mind. Judging from the scattered human bones in the room and the messy shells on the ground, these people seemed to have died in battle. The huge pits on the hard concrete floor obviously belonged to the explosion, which seemed to be to confirm Tianxiang's idea, lay there quietly, opening his own semicircular gap, and exuding silent speech in agreement.

There was no sign of insect activity here, maybe the strong oily smell permeated in the air made them give up the idea of ​​building a nest here. Tianxiang tightened a new M5G43 submachine gun bolt in his hand, and continued to travel between these seemingly useful but actually nothing like garbage. He wanted to search for those ancient relics that were useful to him.

The emergency lights on the walls are still emitting a faint light, maybe because no one has come here recently for hundreds of years! Their energy supply is quite good. This also allows Tianxiang to accurately discover the most valuable things from piles of broken copper and iron under sufficient light.

A book! A book with a plastic cover on the surface appeared in front of Tianxiang. Next to it, there was an ancient skeleton that had long lost its life.

Tianxiang flipped through the book he picked up gently, and the contents obviously made him understand some problems that he had never thought of before. This could be clearly read from his face full of horror and horror.

To be precise, this is not a book. It is a diary, a diary of ancient people recording events.

June 21, 2114

For many days, we still haven't seen any reinforcements. Although there is ammunition here and there is no shortage of food and water, it cannot cause a powerful blow to the invaders at all. There is no way, our weapons are too old and too old. The number of laser rifles newly developed by the Federation is too small. The captain said that the thing is only partially distributed in the elite troops. As for us, we may only use old machine guns to fight the enemy!

June 23, 2114

The sky was still so gloomy, and the sun seemed to have completely lost his trace. I really don't understand why the bastards from the Science and Technology Research Department came up with such a bad idea to cover the earth. Even the captain said that this was the stupidest idea of ​​this century. The continuous cold and dampness made my socks feel sticky. There was no way, that thing couldn't be dried at all, and even if it was roasted on fire, it could only be made half-dry and half-wet. Of course, the taste was extremely smelly...

June 24, 2114

Zhang Zhenbing died, and Bauman died, and they were my best companions in the team. It was all my fault for the stupid artillery sniper. If it weren't for them, Zhang Zhenbing and Bauman wouldn't have died. They could have returned safely from the second channel after the attack mission. I really wanted to rush up and beat that idiot. If he hadn't been scared by the invader and forgot to fire the gun, I'm afraid they would have been able to grab bread with me now. To be honest, if the captain hadn't stopped him, I would have shot through the bastard's head with one shot.

What can I do? All accounts must be counted on the heads of those terrifying invaders.
Chapter completed!