Survival: Starting with a Tiny Treehouse

Chapter 516: Goodbye in the future (5500 words)

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Xu Xin in the video continued: "In addition, I also left a team of giant beasts. You need to find them by yourself. Maybe you have already come into contact with them? Don't worry, you are not fighting alone."

"Of course, I also told them not to help you too much before you grow up, otherwise..." Image Xu Xin smiled, "I know you best. Without pressure, you will become useless."

"There are some things that I can't explain in detail right now, and I don't have time to explain them in detail. If you encounter them, you can get some information from them."

"Those giant beasts are very intelligent, so there is absolutely no problem communicating with them."

Xu Xin showed a look of sudden realization.

On the ground, he encountered a giant crocodile, and underground, he encountered the giant black beetle, the blood-marked python, and the soft giant insect that was pressed under the prison.

These giant beasts had all provided him with some help to a greater or lesser extent, and from the voices of the giant pythons and giant insects, he could be sure that they knew him.

So that's what happened...

It turns out that they are all the same self in the video. Are they the ones who are left as a team

He suddenly felt more confident!

"In addition to these, we have also left the most precious legacy to you in the future."

At this time, Xu Xin in the video spoke again, with a smile on his face, showing a confident expression for the first time.

"That is... the city you are in now!"

"This city is carved out of special crystals!"

As he spoke, he walked to the window on the third floor of the palace and pointed outside.

Although he should be in a virtual image now, Xu Xin can still see the city emitting bright white light outside the window.

"This city will be our most powerful weapon to change the future and save the fate of life on Earth!"

This city was indeed built by the person in this image!

This crystal dream city, is it left to them

"This city is not small, you should be aware of this." Xu Xin in the video smiled.

"The city occupies a standard square with a side length of five kilometers. The entire city covers an area of 25 square kilometers."

For an urban area, this area is very large.

Building such a crystal city is definitely not an easy task.

Not to mention that this material is incredibly hard!

"The materials for this city were excavated together with the blood of the giant beast. The ancient mysterious materials buried deep inside the earth complement the blood of the giant beast."

"This material is indestructible and extremely hard. The methods needed to shape it are extremely complex. Physical collisions under normal conditions are completely ineffective against it. It requires a temperature of at least hundreds of millions of degrees to soften it."

… How many

Over...hundreds of millions of degrees?!

Xu Xin was a little confused.

Is this temperature a bit too outrageous

The temperature of the sun's core is only 15 million degrees Celsius...

Of course, this temperature is not impossible to achieve.

And it has been achieved on Earth in the past.

Controlled nuclear fusion.

Although the temperature of the sun's core is only 1500 degrees Celsius, in order to achieve controlled nuclear fusion on Earth and create an artificial small sun, the temperature of the high-temperature plasma in the fusion device needs to be maintained at above 100 million degrees.

In the past, experimental devices for controlled nuclear fusion on Earth had already reached temperatures of hundreds of millions of degrees Celsius.

Of course, it was just an experimental device, and controlled nuclear fusion was just something that required huge investment and was promising in the future at the time.

Some pessimists even believe that the difficulty of humans achieving truly controlled nuclear fusion is about the same as achieving immortality.

However, he was not surprised that Xu Xin possessed such skills.

After all, the self in this image seems to have almost achieved immortality...

Moreover, one of the uses of controlled nuclear fusion is that it has almost endless energy, allowing one to travel in the deep space. So it seems that the alien invaders may already possess this technology.

But... using hundreds of millions of degrees of heat to melt this crystal material and build this entire city...

This difficulty is probably much higher than controlled nuclear fusion, right

… horrible.

What exactly is this substance

How did they do it

"I can't tell you the smelting method, maybe you will come into contact with it in the future." The image Xu Xin said, "You just need to know that this city can defend you from most attacks."

"That's right!" At this time, Xu Ying on the side couldn't help but speak up, "It is indeed true. We have conducted experiments on this city. Artillery shells and laser weapons can't cause any damage to it at all. It can even reflect laser weapons!"

As she spoke, she hammered the crystal table in front of her: "This thing is very hard!"

Xu Xin in the video nodded and continued: "This is not the most important function."

"As long as a creature has the blood of a giant beast, while in this city, the injuries and negative effects of the body will gradually recover, and the blood of the giant beast will be further strengthened to resist the erosion of blood pattern mutation. In other words, any creature with the blood of a giant beast will be in the best and strongest state in this city... and become your companion."

this…

Xu Xin took a deep breath.

This feature…

"When creatures with giant beast bloodlines live in this city for a period of time and their bloodlines are strengthened to the point where they are not affected by bloodline mutations, they will become your most powerful helpers!"

"You can use this city to build an extremely powerful army of behemoths for yourself."

"In order to prevent the Blood Mark Clan from discovering this city too early and preventing it from affecting the future, I built it secretly underground and will seal it. I hope that one day in the future you can arrive and activate this city that we have prepared for you."

"If you can see this video, it means you really did it." Xu Xin in the video still had a slightly worried look on his face. He was probably afraid that his future self would not be able to discover it, and that everything he had done would be in vain.

"We will definitely find it." Xu Ying at the side was very confident, "The location we set up is right below the location where we teleported them to. Isn't it easy to find it?"

"... I hope so." Xu Xin shook his head.

Xu Xin did frown slightly.

What he said is indeed very powerful, but...

This city is underground!

Does this mean he wants to live underground forever

Xu Xin in the video continued: "That's all I want to say. This video is about to end. This city will end after this video..."

Before he could finish his words, his body suddenly became illusory again, and even a little distorted.

Xu Xin's tongue suddenly shrank.

This is much more serious than the last time!

"Brother!" Xu Ying screamed and tried to reach out and grab Xu Xin in the image.

"Don't touch me!" At this moment, Xu Xin in the video suddenly interrupted her action with a shout, "Do you want to die?"

"Let's die!" Xu Ying was also desperate. She grabbed his arm and gritted her teeth, "You won't live much longer anyway! There are only two of us left now! If you die, I won't live either!"

And at the moment she caught him, Xu Ying's body suddenly became illusory!

this…

When Xu Xin looked at this scene, his heart felt like it was going to stop beating.

Has the self in this image... reached the end

As if influenced by Xu Ying, Xu Xin's figure in the image gradually stabilized.

His expression became more tired than last time, like a man who had been up all night for more than ten days, with sunken eye sockets, as if he would die suddenly in the next moment!

“Brother…!” Xu Ying’s eyes were red and her voice was choked with sobs.

"Yingying, let go." The image of Xu Xin spoke.

Although he looked like a zombie at this moment and his voice was extremely hoarse, his tone was very calm.

"You can't go with me. There are some things that you need to finish."

“I… I…” In the video, Xu Ying was about to collapse, but she still trembled and slowly loosened her hands.

The moment she let go of her hand, Xu Xin's body began to collapse completely!

It felt like a ball of broken data. Various parts of his body began to become blurred, and spatial cracks kept jumping on his body.

Xu Ying's tears were already pouring down her cheeks. She wanted to grab the man in front of her again, but she knew she couldn't do that. She raised her hands in front of her, trembling slightly, and was caught in a dilemma.

"... Yingying..." The voice of Xu Xin in the image became vague and intermittent, "There are... a few more images that can only be recorded by you... and this city... The last disguise... You..."

"... liar..." Xu Ying dropped her arms weakly and choked up, "You clearly said... you wouldn't leave before me..."

"… I'm sorry. But don't worry." The image of Xu Xin became clearer at this moment, as if it were a flash of light. He said softly, "We will meet in the future. Our future has infinite possibilities."

“But… but then, is it really me…” Xu Ying also slowly calmed down. Although her breathing was still a little unstable, her tone had become much more restrained.

She probably... has seen too many scenes like this.

But this time is the last time.

"That's of course us. That's another possible us." Image Xu Xin smiled, "Aren't all of these things we do for ourselves?"

"... Yeah!" Xu Ying nodded vigorously.

"... Goodbye, Yingying." The image of Xu Xin became illusory again, and this time, the space around him began to become chaotic, "We... will see each other... in the future."

"elder brother!

"Xu Ying still couldn't help herself, and wanted to pounce on Xu Xin and catch him the moment he disappeared.

But it was all in vain.

In the video, a living person seemed to be swallowed by space, twisted into a point, and finally disappeared.

Xu Xin, who witnessed all of this, felt indescribably shocked and...uncomfortable.

But he himself...

"Woo... Woo..." Xu Ying, who had fallen to the ground, slowly sat up. She hugged her legs tightly, buried her head, and her body trembled.

Xu Xin was silent.

Judging from the conversation between the two just now, their team should only have these last two people left.

Perhaps other people also disappeared in this way.

Now, the future self has shattered and dissipated, and Xu Ying in the image has become the last person left.

… No one can accept this.

All my relatives and friends have passed away, and I am the only one left in the world, facing everything, including the death that may come at any time.

Moreover, she couldn't even choose to die by herself. There were still some things that needed her to accomplish and take responsibility for.

In the video, Xu Ying did not sob for a long time, maybe just half a minute, then she raised her head and wiped her eyes with her sleeve.

"I have lived for hundreds of years. Normal people... cannot live as long as I have." Xu Ying did not seem to be leaving a message with the video, but rather seemed to be comforting herself, "My brother lived seven or eight years longer than me. He is luckier than me..."

She took a deep breath, raised her head, and looked in the direction of Xu Xin: "Future brother, you must let us have a happy future! Otherwise... Otherwise, all the things we did..."

Maybe she is regretting it.

If they didn't do these, although the earth would be completely colonized, they would have an extremely long lifespan and live forever.

Moreover, they have found ways to break free from control and can live in seclusion without being affected.

But they chose to resist, choosing a path of no return that destroyed their future.

"I have no regrets." Xu Ying sat on the ground, talking to herself as if trying to convince herself, "In the future, I will definitely be able to live in a world without alien colonization and where I can make my own decisions!"

… He will do it, Xu Xin said in his heart.

"Brother." Xu Ying looked in his direction again and smiled slightly, "You are only in your twenties now, right? I really miss it. Back then, our relationship was probably at its worst... Ah... Let's not talk about this... I want to..."

Her voice choked slightly.

Xu Xin wanted to comfort him, but he also knew that the Yingying in the image probably no longer existed in this world.

… etc.

He suddenly discovered a problem.

What about his Yingying

Is it... not in this world yet? Will it arrive at some point in the future

The sixth batch of survivors

Xu Ying stood up, calmed down, and said seriously: "Brother, there is a mechanism we made under this crystal city. After this video ends, this crystal city will automatically rise up and appear above the ground. You don't need to worry about this."

Xu Xin, who was still thinking, was suddenly shocked.

Can this city actually rise to the ground

This is too powerful!

The joy of hearing the news immediately diluted the sadness just now.

If this city were on the ground, it would be much more useful than underground!

"Also, we left some supplies, but not in this palace." Xu Ying's voice had returned to calm. "This palace involves the application of time and space, and storing things is still not very stable, so we put them outside."

Although her tone was calm, she had never spoken so calmly before, which was enough to show that she was desperately suppressing her emotions.

"Also, in... um... underground it's hard to tell the directions..." Xu Ying thought for a moment and said, "Let's go left and right. Inside the tenth crystal building on the left side of this crystal palace, there are the resources we left for you."

"There are some sealed genetic drugs developed by us. They need to be injected into the body."

"As long as you inject that potion, you will have an extremely long lifespan like us, and your brain will be developed accordingly, so that you will not be controlled by the blood vein mutation. That is actually the potion we refined to fight against the mutated bloodline."

… !

!

Xu Xin's eyes suddenly widened with joy.

There is such good stuff out there!

"... There are also some potions that are made from the genes of giant beasts. They can allow creatures to obtain the blood of giant beasts or become stronger, but... the creatures that use those potions will have a smaller body size..."

… The blood of the giant beast will make it bigger.

"You know, so... it's up to you to decide who to give it to." Xu Ying said softly, "If you don't mind, you can give it to someone else. It's a giant, very strong."

this…

never mind.

… He himself still cares a lot about it.

"That's about right... Oh, by the way, there's one more thing." Xu Ying picked up the crystal on the crystal table that had just affected Xu Xin's handprint, "That potion can't give you strong physical abilities. Our strong physical abilities are brought by mutated blood. If you want to have such physical abilities, you can try to mutate your own blood veins."

"Don't worry, with our gene potion, the blood vein mutation will only become your strength, and even..." She pointed to her face, "even the blood veins won't appear. The blood veins on our bodies have faded away long ago. When we were often forced to help those invaders, we would draw some on our bodies."

"So, there is basically nothing to worry about. Our genetic medicine can perfectly suppress the negative effects brought about by blood pattern mutation."

… It seems that Lou Feier and the others can truly return to normal.

And he can also try to mutate his blood veins!

"One last thing... Be careful with humans." Xu Ying's eyes became sharp.

Watch out... Humans

"Don't forget, those alien invaders would leave behind a group of people as their running dogs at the beginning of the invasion!" Xu Ying said, "The running dogs in our timeline were ourselves, and in this timeline, there are others! We have already contacted them, but unfortunately, we can't do anything to them..."

"Among them, there were rebels like us, and they even contacted us, but they were purged in the 500th year!"

"All of them who are left are traitors to humanity!"

… She was definitely not talking about those hairy weirdos! After all, Xu Xin had said in the previous video that they were injected with more advanced drugs, so their appearance should not have changed much…

In other words, he hasn't come into contact with this group of people yet...

Or... this group of people is hiding among them

No way…

"Brother... I hope you can see this video..." Xu Ying in the video said softly.

As soon as she finished speaking, the surroundings suddenly became dark.

Then it became a purple-black starry sky!

Then, the purple-black starry sky began to shrink wildly from all directions. In the blink of an eye, the bright white light appeared in front of his eyes again.

He returned to... the third floor of the Crystal Palace.

“It’s…coming out!”

Lou Feier's exclamation was also heard behind him.

He looked back and saw the four women standing together about seven or eight meters behind him.

"Xu Xin! You are here!" Zeng Tao saw him and was immediately surprised. "What did you do just now..."

Before she could finish her words, suddenly, the ground beneath her feet began to vibrate slowly.

"What happened?!" Lou Feier immediately looked around vigilantly.

Jin Yue immediately kicked off and jumped to Xu Xin's side.

Shi Wanyun looked at Xu Xin, thoughtfully.

“Boom! Boom—”

The ground was shaking more and more violently, and everyone could hardly stand.

"Everyone come here!" Xu Xin said immediately.

Several people immediately ran to Xu Xin.

“What on earth is…” All the girls had very confused expressions.

Feeling the vibrations around him, Xu Xin's lips curled up slightly, and the melancholy in his heart was also washed away a lot: "This crystal city is now rising to the ground!"