It is indeed surprising that such a "artificial magic crystal" cabin was found in a confined laboratory underground.

After Tuster studied for a long time, he also came to a conclusion: these "artificial magic crystals" may be really what ancient goblins use as energy.

For example, the legendary "magic cannon", the energy supply of the previous "lift" and even the high-precision equipment in the entire ruins.

The old man had discovered before that many instruments lacked key energy supply equipment. Now it seems that it is not lacking, but that he did not understand the special energy supply principles. Now that he sees "energy", many designs suddenly become clear.

From the current perspective, those "artificial magic crystals" are more stable than "steam kinetic energy". They can be used in some small high-precision instruments. However, when used in mechanical cities, not to mention gold as bricks, the amount of energy provided is far from enough. The cost is countless times higher. Perhaps it can only be regarded as a supplementary energy that cannot meet the needs of the "steam engine".

The key is that in this closed laboratory, the instruments that produce "Abyss Demonic Energy" can be dismantled and removed!

This means that Rennes and the others will have an infinite source of demonic energy, a cultivation treasure land, and an artificial magic crystal factory.

But before the proper placement plan, they did not plan to move these instruments away for the time being. It seems that the best choice is to place them underground.

As for what is in that iron jar?

Although Renne was curious, as long as he wasn't crazy, he would never do such a stupid thing as opening a can.

Not to mention that such a wonderful goblin device cannot be restored if it is turned on, it is just that unknown risks that no one can bear.

Using your toes, this thing can provide the same function as a "nuclear reactor", and the danger level of the things inside will definitely not be lower than that of radioactive materials.

What's more, this set of equipment has been running for thousands of years, and it is a stable one. Isn't it good to use it to practice? Why do you do it when you try to open it?

......

There are still some unknown areas in this goblin ruin, but Rennes did not continue to participate in the exploration.

Both Tuster and Yumil both think that it is the top priority that he writes out the goblin technology documents he has recorded as soon as possible. It is not necessary to worry about "the city lord" when cleaning up the spoils and other chores.

Anyway, if there is anything good, Yumier will think about it for him.

Then, Renn didn't go anywhere, stayed in the laboratory of "artificial magic crystals", set up a table and chair, and then a thick pile of white paper, and began to copy books.

This is a very time-consuming task. It is not just about copying texts, thousands of professional classics, but also various goblin technological drawings with extremely high precision, which requires a lot of energy to carefully copy.

But anyway, there is [Thunder Totem], and you can become stronger even if you breathe while standing.

Ren also planned to use this "abyss demonic energy" that was seven or eight times stronger than outside to overflow the third-level Dou Qi cultivation while copying the book.

It just so happened that Bazer then said that the legendary skeleton he had fought fiercely before and had some understanding of the laws of high positions, so he stayed together.

It took several days in a flash.

Yumier said goodbye and wanted to go back to Heilong City to preside over the urban construction work, and then he would arrange for people to come here to start mining and construction.

Mr. Tuster stayed behind and studied the machines left by the goblin city. But the old man was already addicted to the goblin technology. Except for occasionally watching Rennes' progress in copying books, he rarely came down.

Rennes and Bazer took root in this lab.

.........

There is no time to practice, and time passes in a flash.

Finally, two months later.

Because of the super rich "Abyss Demonic Aura" in this laboratory, Renn reached the level of second-level fighting spirit overflowing.

Because of the blood nematode, his meridians can withstand almost limitless Dou Qi.

But after trying it, Ren also found that after his fighting spirit reached a limit of more than twice the expected limit, no matter how he absorbed it, it would not increase.

But this is already an unexpected surprise.

If he regarded his previous level of extraordinary first-level advancement to second-level Dou Qi as 100 units, the normal second-level overflow state of the golden potion he used to take [Humanity Master] should be about 500 units. And because he is the "Breath of Thunder" by "Qigong Master", Dou Qi will be thicker, but no matter how talented he is, it will not exceed 700 units.

But now he is in a state of overflowing fighting spirit, but he is more than 1,500 units more than 2-300 units. (Ordinary black iron, silver is about 2-300, gold is 500.)

This fighting spirit will definitely crush any extraordinary person at the same level.

Moreover, once you take the genetic potion and break through the third gene chain, the fighting spirit will soar three or five times, and the number gap will become bigger and bigger like a snowball!

And at the first level, 100 units just condensed ten lines of gangs.

It was originally estimated that when the second-level Dou Qi was overflowing, the Dou Qi could reach 150... But in fact, he found that the more number of Kanta lines, the larger the base of Dou Qi needed to condense the new Kanta lines. Until now, there are only about 80, only half of the expected ones.

This is already an unexpected surprise. Normally, forty items are good.

With so many straits, Renn is now not hit by a punch, and the possibility of ordinary injuries is extremely low...

......

After the fighting spirit is overflowing, it will naturally advance.

However, the extraordinary third-level advanced level is different from the second-level, so there is a big threshold here.

On this day, Renn took out the third-level thunder "Thunder Tiger Demon Core" that had been prepared long ago to be absorbed, intending to take the law of the thunder fighting spirit to a higher level.

In order to prevent failure, two magic cores were specially prepared.

This magic core is a private treasure brought by Ymir from the Royal Treasure House of Oma, which is very rare. She also generously sent it out when she knew that Ren's advanced thunder system.

Thunder-type monsters are rare, let alone a third-level "Thunder Tiger" with pure thunder-type laws and containing domineering power.

This is the choice that Mafa’s extraordinary predecessors guided Renn, in order to better suit his extraordinary path of power.

Looking at the two empires of Omashid, I guess I can't find the second pair.

......

There were only two people in the laboratory, except for the strange instrument, which was still black gas coming out and making subtle sounds. The room was extremely quiet. With Bazel there, you were not afraid of sudden accidents. This was a very suitable environment for practice.

"call..."

Everything was ready, and Ren slowly exhaled, held the "Thunder Tiger Demon Crystal" in his palm, and then began to meditate with his eyes closed.

The purple fighting spirit behind him was like a flame, overflowing from the raging bells, three feet tall.

As time passed, the layer of Dou Qi, which was swaying like a veil, seemed to be controlled by an invisible force, slowly condensed into the appearance of a tiger, first with a tiger's head, a tiger's body, a tiger's tail... and then with Lei Hu's fierce facial features...

However, for some reason, the tiger condensed by Dou Qi was always tangible and without spirit, like a cat or a tiger. After several condensation, it did not form and disperse...

And Bazel, who was meditating not far away, felt something and opened his eyes and glanced at it.

Then he shook his head slightly and sighed, ignored it, closed his eyes and meditated again.

......

There are many big shots around Rennes, and they have all kinds of ways.

But they all said that the extraordinary third level is a huge threshold.

After the second-level extraordinary fighting spirit is overflowing, there are two ways to advance to the third-level extraordinary.

The first is to take genetic potions directly. As long as the degree of fit is high, the possibility of advancement is very high. But in that case, the possibility of becoming a top expert is almost lost, and the probability of advancing to level 4 is slim.

The combat power is also much different from the second method!

The second way to advance is to not only overflow the Dou Qi, but also to allow the extraordinary to gather the "momentum" of his own energy and let the Dou Qi have his own soul.

The best and most direct way is to visualize the magic core used and understand the "power of the monster" of the monster.

For example, the "Thunder Tiger Demon Core" that Ren advanced, he doesn't need to understand anything else, he just needs to realize the domineering and fierce momentum, until the fighting spirit can gather into the shape of the Thunder Tiger, he can successfully advance.

Then the fighting spirit will have a "soul", and his body will also receive the most likely feedback of the thunder tiger's ability. After advancement, people will have the power of a fierce tiger, their fists and feet will have the power of a thunder tiger, and their combat power will surge.

.........

Naturally, Renn didn't want to stop at the third level of extraordinary, he also wanted to see the scenery at a higher level of extraordinary. That's why he was careful to condense his "momentum" of fighting spirit.

Mental tips, secret techniques, experiences...

The most suitable magic core and the most fighting spirit.

Rennes has almost perfect advancement conditions.

This meditation took a whole night.

But unexpectedly, until the energy consumption of the "Thunder Tiger Demon Core" in his hand was completely exhausted, the "Thunder Tiger Power" that he condensed seven or eight times still disintegrated!

.........

“Failed?”

Opening his eyes again, Renn looked at the "Thunder Tiger Demon Core" that had turned into a transparent crystal core in his hand with disbelief.

Has he failed to understand such a high-quality magic core?

He recalled the whole process, and almost everything was based on the experience of the big guys. Why did it fail?

He knew very well that the fighting spirit was very sufficient, far more than several times that of the same person. The "thunder and tiger power" condensed by the purple thunder fighting spirit was like a sick cat, and it collapsed before it even formed.

Why is this?!

After thinking hard for a long time, Rennes was still puzzled, and fortunately there was a "legendary" Bazel in the house.
Chapter completed!