The concept of 'artificial ecological circulation systems', also known as 'artificial closed ecosystems', originated before the interstellar age.

At that time, when the entire blue star was accumulating for interstellar colonization, some scientists proposed this concept.

The reason is simple, the fragility of human beings is obvious to all, not to mention outer space, even if you change the environment, it is possible to cause a disease and die.

Therefore, those space warships, or forward bases on barren planets, must have a complete artificial ecological circulation system.

You have to ensure that the people above, even if they can't contact Blue Star for tens or hundreds of years, and there is no additional supply, they can still survive well.

Mo Chengjun vaguely remembered that the original topic of this experiment was called 'Biosphere 2', because 'Biosphere 1' was Blue Star itself.

However, the experiment failed not long after, and he couldn't remember why.

In fact, even later, the completely independent artificial ecological circulation system still did not succeed.

Even if it is on a space carrier, it can only be maintained for about a hundred years, and no matter how long the time is, it will be out of balance.

As for those spaceports, or forward bases on deserted planets, the performance is even worse.

Mo Chengjun didn't know the specific reason, it was not his good direction, but the replenishment of materials brought by regular routes was a must.

This is also the reason why the first interstellar colonization was aimed at the Kepler B-22 planet, even in the vast universe, planets similar to blue stars are extremely rare, and it is really not easy to find one.

It's just that what he didn't expect was that the Heaven Mending Sect actually mastered such a technique.

Originally, he thought that the immortal realm created by the Heaven Replenishing Sect was similar to the situation of the Heavenly Court Blessed Land.

But now, they actually use the spiritual power of heaven and earth as the source of energy, the blessed earth of the cave as the core of operation, and then supplement it with all kinds of magical means to transform the environment, so as to open up an oasis on the desert-like planet.

Shen Jinxiu just said this thought, and Mo Chengjun only felt a sense of excitement, climbing from the tail vertebrae to the Tianling Gai.

Almost instinctively, he was calculating, what kind of technology would be needed for such a 'man-made closed ecosystem'?

What are the requirements?

What specific details do I need to pay attention to?

How many parts can it be divided into?

It was also at this moment that he was almost certain of one thing, the Heaven Mending Sect must have mastered the two techniques of 'spiritual self-reproduction and splitting' and 'manufacturing of the spiritual spring'.

Otherwise, even if all the resources of this world are bald, it will not be able to support the plan to open up the immortal realm.

At this moment, Mo Chengjun lowered his head, he looked at Shen Jinxiu, and there was irrepressible excitement in his tone: "Palace Master, you just said that one of the contents of the training in Guanghan Palace is to teach you how to open up the Immortal Domain?" ”

"yes!"

"That's good, that's good!"

Mo Chengjun couldn't help but start pacing, he clapped his hands and said, "This is a good thing, an absolutely good thing, if we get it, it will definitely have a big effect." ”

Saying this, Mo Chengjun sat down again, he looked at the female sword fairy with a look of hope, rubbed his hands, and said, "Palace master, that method, have you recorded the method?" ”

"This, no!"

Shen Jinxiu held the tea cup and looked at Mo Chengjun, who was so excited that he couldn't help himself, as if he was a little distracted.

"It doesn't matter if it's not recorded, palace master, you can just tell me directly, if you don't understand, I'm asking you ......"

Looking at Mo Chengjun's expectant gaze, Shen Jinxiu finally said, "I haven't started learning yet!" ”

"What?"

"Ahem, is this really important?"

Mo Chengjun's voice was very loud: "What's more! Having this will not only help me study the upgrade of the Cave Heaven Blessed Land, but also give me a glimpse of the technical background of the Heaven Repair Sect.

Moreover, this kind of technology cannot exist alone, it must be a complete and systematic system, in which the cutting-edge technology of the Heaven Replenishing Sect is integrated.

With a little inspiration, I can unpack a lot of good things. ”

Shen Jinxiu regretted hearing this, but she could only accept the reality: "That's no way, this course has actually just started, I have learned a synopsis, and it has not yet involved the actual content."

Then, I found out about the old master. ”

Mo Chengjun was speechless, he paused for a long time before asking, "Palace Master, then when you came back, you didn't think about bringing something useful?"

For example, isn't it convenient to throw classic books and books into a storage bag? ”

"This, this, cough cough, it was angry at the time, and a longitudinal sword directly pierced the heavenly dome of Guanghan Palace.

Then there was no way out, so he could only keep doing it, and Edgeworth fled. ”

At this point, Shen Jinxiu's voice was getting smaller and smaller, and she was actually thinking about it now, and she felt that she was too impulsive at the beginning.

Otherwise, there will be no way to be chased in the sky, no way to enter the ground, so embarrassed.

At this point, Mo Chengjun had nothing to say, so he had to ask: "Palace master, is there anything else you need to tell me?" ”

"Uh, yes? I don't think so! ”

"That's it for today, I'll go first."

Mo Chengjun left, huffing, and glanced back at Shen Jinxiu before leaving.

That glance was full of resentment!

Shen Jinxiu got goosebumps when she was watched, and when Mo Chengjun went out, she was also thinking about the teacup: "Why didn't you want to bring something back at that time?"

Really, is it because you're old and your head is not good? ”

On the other side, Mo Chengjun went out for a spin, found that something was wrong, and came back again.

Shen Jinxiu asked with a puzzled face: "Why did you come back, is there anything else?" ”

Mo Chengjun pointed to the thousand-year-old Cloud Mist Immortal Tea Tree and said, "Palace Master, this is my family?!" ”

"Oh, oh, ah, then I'll go, I'll go!"

"Wait."

"What's wrong again?"

"Give me something, I specially asked you to take it with you before you left."

"Oh, here you go."

Saying this, Shen Jinxiu took out a black box and threw it to Mo Chengjun, while she herself left without saying a word.

It's that back, a little embarrassed.

As for Mo Chengjun, he sat back in his place, took a sip of tea, slept on the recliner, and relaxed his whole person.

To be honest, Shen Jinxiu can come back safely, even if it is a blessing to invite heaven.

There are times when you shouldn't expect too much.

But the problem, I'm really unwilling!

……

said that he wanted to relax, but Mo Chengjun couldn't be idle.

He first tossed the black box aside, and then began to reflect on the news he had received from Shen Jinxiu.

About the battle between the True Demon of the Desire Realm and the Mending Heaven Sect, about the combination of dragons, phoenixes and unicorns, about the concept and method of opening up the immortal realm, about the ecological circulation system, and about the 'fellow countrymen' that may exist.

At a certain moment, Mo Chengjun stepped forward again, sat up, he took the black box, and slowly entered the mana.

This black box is about the size of an adult's palm, and the whole body is jet black and extremely hard, but in fact, this is not the body.

The real core is a jade-like magic weapon inside.

This thing was ordered by Mo Chengjun, fully developed by the Immortal Dao Research Institute, and cooperated with the three refining masters of Qingyou Pavilion.

How technical are you going to say?

That's not true!

There is no attack or support effect, and the reason why it takes so much effort is more because he is in a hurry, and because this thing is unprecedented.

At this time, when Mo Chengjun opened the special method and then instilled mana into it, a deep or shallow path began to appear in Mo Chengjun's mind.

Then, he immediately took a pen and paper, and wrote and drew on it, and in a few moments, the paper was full of mathematical symbols.

After a long time, he finally completed a sketch, hand-drawn, and it is impossible to say how accurate it is.

But it can be seen that it is a map of the orbit of the satellite around the planet.

That's right, the role of the black box is to faithfully record Shen Jinxiu's trajectory, and it will also be reflected in different colors according to the speed.

And Mo Chengjun used this method to estimate the actual trajectory of the Taiyin star in the sky revolving around this world, as well as the approximate distance between the two.

Looking at the trajectory diagram in my hand, it is not a pure circle, but an elliptical with a slight arc.

In the farthest place, Mo Chengjun drew a line, and the calculated distance was about 300,000 kilometers.

The nearest place is only about 240,000 kilometers.

So, on average, that's about 270,000 kilometers.

Of course, this data is not accurate, but it is enough to have a rough idea.

Because, although he is extremely lacking in astronomical knowledge and can't recognize those constellations in the sky, he at least knows that the distance between the earth and the moon in his memory is about 380,000 kilometers on average.

So, it's different, it's really different!

Throwing away the paper and black box in his hand, Mo Chengjun lay down again, he put his hands behind his head, looked at the moon in the sky, and his expression was also a little inexplicably melancholy.

I should have known the result a long time ago, but why didn't I give up?

Maybe it's those familiar nouns that you hear occasionally, which can always cause ripples in your heart, right?

It's just that this is not the home it used to be after all, it's time to put it down! I have to put it down!

However, if this is not the so-called Kepler planet, is it possible that the Heaven-mending Sect has opened up a fairy realm?

A super-sized fairy realm that covers the entire planet?

It seems that it is not impossible!

……

Mo Chengjun had to admit that in the several battles with the Heaven Replenishing Sect, Heavenly Court had maintained an equal and even strong position.

It made him a little fluttery.

You see, the huge force known as 'mending the sky' is actually nothing more than that.

But the female sword immortal's trip to the Guanghan Palace really made him see the gap between the Heavenly Court and the Heavenly Sect.

When it comes to absolute strength, the two sides are not on the same level at all.

And the battle of the heavens and the sky also made the palace masters who had just achieved the sword immortal sober up.

Being able to be unrivaled in the vast world does not mean that you can go to the outer world, and you have not been able to win four or two, and the gap between them is almost clear at a glance.

Therefore, after this battle, there was no need for Mo Chengjun to urge, and several palace masters ran to the scientific research institute every day, staring at the project of the 'extraterrestrial space station'.

With them and an ample supply of materials, the project, which had been slowing down, was immediately put into action, and the first version of the design was also produced.

Well, it's the first version of the design, but it's actually the old way - to build a floating fairy boat that can fly outside the sky.

To be honest, this is actually nothing, because the floating immortal boats are all ready-made, and the Qingyou Pavilion has them.

But how to send it is a big problem?

The Floating Immortal Boat is too big, even if the South Heavenly Gate is fully opened, it is impossible to pass through it directly.

But if you fly straight up?

That's not a person, its huge size is destined to not fly high, and it is impossible to break through the limits of the world's gravity.

In the end, the scientific research institute came up with two solutions, one is to split the floating fairy boat, transport it to the outer sky in batches, and then assemble it.

The difficulty of this method lies in the environment of the heavens and the heavens, except for the immortals, there is no way to have their own activities and replenish mana.

And within the blessed land of the Heavenly Court, Ruan Qunyu, the master of the Qingyou Pavilion, is both a refining master and an immortal.

But the question is, for such a big project, if she is asked to assemble it alone, will it exhaust her to death, not to mention, the most important thing is that the time will drag on for a long time!

Therefore, in the end, Mo Chengjun still chose the second method, which is to portray the prohibition of "Big and Small Ruyi" on the surface of the floating fairy boat.

As long as it is done, this immortal boat can be reduced to a certain extent, and it can be directly packed into a storage bag and taken to the outside world.

Of course, even so, it is still a big project, and Qingyou Pavilion is busy.

Moreover, the existing floating fairy boat is actually not suitable for long-term activities in the outer heavens, and the reason is simple, it does not even have the most basic ecological circulation system, except for being a living platform for the immortals, it has no other role.

The monks under the immortals, especially those from the scientific research institute, could not enter and survive for a long time, so they would not be able to carry out experiments in the outer heavens.

In this way, this 'extraterrestrial space station' doesn't mean much.

Mo Chengjun's idea was to send a floating immortal island up first, make a place for several palace masters to stay, and let them practice magic powers there.

As for the design of the second version, Mo Chengjun originally wanted to build a building that could fight, defend, and carry immortal cultivators to carry subject experiments, and also sail in the void......

Just a thought, he laughed a little, where is this space station, it has evolved into a space carrier.

Therefore, there must be fewer unrealistic brain holes.

After thinking about it, Mo Chengjun crossed out all the messy requirements, leaving only one.

In other words, this second version of the design must build an 'ecological circulation system'.

In this regard, the best naturally had to find the Heavenly Sect, but unfortunately, he didn't think that he could easily obtain information from the Candle Dragon Dragon Monarch.

However, if the method of the cave heaven is combined with the floating immortal boat, there seems to be a precedent. For example, the movable war fortress at the bottom of the pressure box of the Qizong is such a work.

If it is possible, supplemented by some means of the Heavenly Sect, it seems that this extraterrestrial space station has a lot to offer!

Thinking like this, Mo Chengjun knew that his next topic had been settled.

Repair, modify, repair, patch, and check a lot of information, and finally the code came out!

Although I'm opening my mind, I have to conform to the basic logic, but unfortunately, when I really write a book, I will find out how lacking my knowledge is!