It was warm and ..... in the tank Warm.

This is Chen Xian's first feeling.

The former can be explained by tactile somatosensory, but what about the latter?

Chen Xian couldn't understand why he felt relieved when he fell into this water tank, those weird black liquids were not good things no matter how he looked at them, but he didn't feel resisting when he was immersed in them, but seemed to be blending into them, and he didn't have the desire to climb out at all......

Immersed in this vat of filthy liquid, Chen Xian's concept of time became blurred, and he could not perceive the passage of time at all, as if even his consciousness had become blurred.

It didn't take long for Chen Xian to gradually come to his senses and open his eyes with a face full of "enjoyment".

At this point, the black liquid in the tank was nearly depleted, leaving only a somewhat viscous residue.

Chen Xian remained in a flat position and lay at the bottom of the tank, while the girl squatted silently in the corner, looking at him with a very happy gaze.

"What about the black water?"

Chen Xian had already sat up when he asked this, raised his hand and gently rubbed his shoulders a few times, feeling indescribably comfortable all over his body, as if all the feelings of fatigue and sleepiness had disappeared.

The satisfaction and comfort that comes from the heart is hard to describe in words.

If you want to compare it, it probably feels like a person with chronic insomnia suddenly has a good night's sleep, and is still in a deep sleep...... The strange sense of satisfaction and comfort when he woke up was similar to what Chen Xian felt at this time.

After waking up, Chen Xian seemed to hear that pleasant sound from his soul, as if every cell in his body was cheering and singing.

This refreshing body feedback made him wonder, what exactly was that black liquid?

At this time, the girl screamed twice, reached out and patted the rubber tubes on both sides.

From previous observations, the black liquid seemed to be flowing from the rubber tubes, but at this time, no matter how much the girl patted, the rubber tubes did not react.

The girl looked back at Chen Xian in disappointment, screaming, like a child who wants to eat candy but can't eat it, and looks aggrieved as if she will cry at any time.

"Let's get out first."

After Chen Xian finished speaking, he got up and walked out of the water tank, and the girl also jumped out in a hurry, following behind Chen Xian like a little tail.

Standing by the water tank, Chen Xian carefully observed the meeting, and the doubts in his heart became more and more intense.

There are many strange things about this device, and there is no way to determine what it is made of at this time.

The cylinder wall is very thin but about 5 mm, through the press and knock test, you can feel the kind of hard like glass, there is no toughness at all, and from the feedback of the knocking sound, it is crisp and sound, it is indeed a bit like the sound of knocking on the glass.

What made Chen Xian most curious was this layer of black.

Like this special black with extremely low reflectivity and uncommon, he reminded him of the special product Vantablack of a British scientific research company that he had seen in the data, and the Chinese name is also known as nano-carbon tube blackbody.

This particular substance is the blackest known substance on Earth, theoretically able to absorb nearly 100% of electromagnetic radiation in the visible band, in other words, it can absorb most of the visible light, and the reflectivity is almost negligible.

"If memory serves..... The nano-carbon tube blackbody is used as a paint......" Chen Xian stroked the edge of the water tank and muttered, "Could it be that this water tank is coated with a layer of this substance?" ”

After studying the cylinder for a while, Chen Xian couldn't come to a definite conclusion, so in desperation, he could only shift his attention to the six black rubber tubes.

The pleasant liquid that flowed out of these tubes, which looked nothing special and felt ordinary, much like the usual hoses used to transport liquids in hospitals.

At this time, Chen Xian suddenly remembered the roar of machinery he had heard before, and subconsciously looked down a few times.

Could it be that there is some kind of machinery underneath this tank?

Judging from the layout of the rubber pipes, it is indeed the one that leads to the bottom of the water tank...... What's underneath?

The previous liquid left an extremely deep impression on Chen Xian.

When immersed in those liquids, he got the feedback that seemed to be back in his mother's arms, so that Chen Xian couldn't control his desire for knowledge at all, and developed an irrepressible and extremely strong curiosity about their origins.

Chen Xian dragged the water tank tentatively, and soon came to some conclusions, the density of the water tank should be very high, and the total weight should be between 400 kg and 500 kg..... This tank may or may be made of glass.

When Chen Xian completely removed the behemoth, the six rubber pipes connected to the inside of the cylinder were also disconnected and fell to the ground one after another.

Facts have proved that Chen Xian's move to remove the water tank is completely correct, and if he does not remove this water tank, he will not be able to find those things hidden at the bottom of the water tank.

There was a piece of golden-yellow metal that looked like it had been melted by the heat, and two broken and bloodstained forms, but most importantly..... Chen Xian discovered a strange entrance.

It is an upturned metal door.

The door was unlocked, with six small holes in the edges, from which the rubber tubes were drawn.

With curiosity, Chen Xian didn't rush to study the door, but picked up the things scattered on the ground first.

Let's start with the piece of metal.

Judging from the touch and texture, it is no different from ordinary copper metal, Chen Xian suspects that this is just some kind of part or scrap scrap, which seems to have lost its original shape by high-temperature smelting, so he can only guess, but can't determine what it is.

Let's look at the other two tables.

One of the tables was completely stained with blood, the font was so blurry that it was illegible, and there was no research value, and the other was slightly better, except that a large area was stained with blood, and a few lines survived.

"March 1, 08:11 - Maintenance Department: Zheng Gang."

"The maintenance work of the nutrition cabin has been completed, the cabin has not been damaged, the continuous leakage has been reported to the superior in a timely manner and recorded, and the logistics personnel began to replenish the nutrient solution for the cabin for the third time, and the current replenishment progress is 63%, and it is expected to be replenished at about 14 o'clock in the afternoon."

"March 2, 04:01 - Maintenance Department: Zheng Gang."

"The comprehensive overhaul of the nutrition cabin was completed, and it was confirmed that the cabin was not damaged, but the cause of the leakage was still not found, and the fourth replenishment of the cabin was started, and the current replenishment progress is 12%."

"March 3, 05:24 - Maintenance Department: Zheng Gang."

"The nutrition cabin leaked again, and the second comprehensive overhaul still did not find the cause of the leakage, and has reported to the superior to apply for the replacement of the nutrition cabin, and began to replenish the nutrient solution for the cabin for the fifth time, and the current replenishment progress is 1%."

The only recognizable lines on the blood-soaked form looked like some kind of punch card or temporary record.

Nutrition pod?

Chen Xian put down the form in his hand and turned his head to look at the black water tank on the side.

"Could this be the nutrition pod mentioned in it?" Chen Xian looked at the water tank in disbelief, and then looked at the slightly scribbled font on the form, feeling a little confused, "If this is really the case..... Isn't that black liquid a nutrient solution......"

Chen Xian has never come into contact with the nutrition cabin, and has only seen some prototypes similar to the nutrition cabin in science fiction movies, but no matter what the shape is, its role will inevitably not change.

According to the concept of the nutrition cabin in the movie, it is a special container for storing the human body, even if the living person in the nutrition cabin does not eat or drink, the nutrient solution it provides can fully meet the energy required by the human body, as if most of the nutrition cabins in the movie are used for healing...... Could it be that this big tank also serves this purpose?

Chen Xian looked through the form in confusion, feeling that the water in this mental hospital was getting deeper and deeper, how could he have a bottomless feeling?

Just when Chen Xian was pondering this, the girl suddenly stretched out her hand and took the form out of his hand, tilted her head and looked at it very seriously, but she didn't seem to understand much, and directly crumpled it and threw it aside.

"Hey, don't throw it around!" Chen Xian hurriedly bent down to pick it up.

At the moment when he picked up the form, the girl took the opportunity to take away the piece of copper-colored metal in his hand, as well as the identity card that belonged to her, and a set of actions flowed smoothly, catching Chen Xian off guard.

What the hell is this girl coming from?

How can you be so skilled at snatching things?

"Give it to me." Chen Xian spread his palms to the girl solemnly and looked at her very seriously, "It's better to put these things here for me, I'm afraid that you will accidentally lose them." ”

The girl didn't know if she understood Chen Xian's words, so she tilted her head and looked at him for a while, her eyes glazed.

"Come, give it to me."

Chen Xian lowered his tone as much as possible, so as not to irritate this girl with an unknown mental state. But it turned out that no matter how gentle his voice was, it was useless, and the girl just smiled stupidly and did not return the thing to him.

At the same time, a groan of pain suddenly came from the corner of the room.

"I just ...... Did you get knocked unconscious by something......"

That's right, Huo Fatzi woke up at this juncture.

I saw this fat man covering his head and moaning, his face was full of the word pain, as if he had just woken up and was still confused, his speech was intermittent, and his eyes could not be opened.

"Little ...... Xiao Chen, are you still there......"

That kind of humming and chirping moaning sounded both resentful and long, and it was no problem to dub horror movies.

"I'm not going to fucking die...... right" Huo Fatzi woke up a little, slowly opened his eyes, and his tone suddenly became nervous, "Why is it so dark here......"

Black?

Black is right.

Chen Xian muttered in his heart, his expression was more nervous than that of Huo Fatzi.

When he heard Huo Fatzi moaning before, Chen Xian directly turned off the only flashlight, dragged the girl to hide next to the big water tank, and the two of them squatted on the ground like thieves and didn't dare to let the fat man find out.

"Huh?"

The girl looked at Chen Xian strangely, as if she didn't understand why he was doing this.

"If you are found to be in trouble, ......" Chen Xian secretly observed the situation on Huo Fatzi's side, and regardless of whether the girl could understand his words, he cautiously told her, "Don't make a noise." ”

It turned out that the girl didn't understand Chen Xian's words at all, but squatted on the ground and touched it for a while, for fear that Huo Fatzi wouldn't notice it.

She fumbled around the ground for a while, and soon found the metal door that had been blocked by the water tank.

Without waiting for Chen Xian to stop her, the girl grabbed the concave doorknob and pulled the metal door open with a bang.

"Hey,! What the hell?! ”

Huo Fatzi was directly frightened and called out, it was already dark here, and he couldn't figure out the situation without seeing his five fingers, plus he didn't know where Chen Xian was, so he was about to have a nervous breakdown when he came and went.

In fact, it's no wonder that he is timid, after experiencing all the weirdness of this mental hospital, who can not be afraid of being suddenly left alone in the dark?

"Be quiet!"

Chen Xian suppressed his voice and didn't dare to shout, so he hurriedly looked back and found out......

The girl is gone.