30 seconds later, three Shura whips penetrated into the brain of the butterfly fish and stirred it fiercely. The sharp blade whips scratched the cerebral cortex, turning its brain into a pile of bean curd.

A few seconds ago, because of severe pain, the butterfly fish kept rolling in the sea, which made Renault feel very uncomfortable. Now it suddenly quiets down, which makes Renault a little uncomfortable.

Obviously, butterfly fish, belch fart.

This also shows that the brain is a very important thing, without it, even Warcraft can not live.

Renault was not in a hurry to get out of the head of the butterfly fish. He was still struggling with nausea and squeezed into a pile of bloody meat.

He''s waiting.

I''m looking forward to it.

How powerful is the soul of a Warcraft?

The next moment, Renault knew the answer.

Due to environmental constraints, he did not see the soul of butterfly fish with his own eyes, but he could feel it.

At this time, the book of thermodynamics in the soul space suddenly opens, and a huge dark shadow "squeezes" into the soul space and covers the surface of the book of thermodynamics.

This is the soul of butterfly fish.

When Renault saw the book of thermodynamics, he could only see the shadow of the soul when he saw the book of thermodynamics.

It was the first time he saw such a strange sight.

Compared with the first Warcraft killed by Renault, namely the sorcerer snake, the soul of butterfly fish is more than four times stronger.

This is normal. Butterfly fish is not a witch snake. It has been sleeping for hundreds of years and is close to the end of oil. It is a complete Warcraft.

Compared with the extraordinary giant turtle killed by Renault, the soul of butterfly fish is almost three times more than the former.

This shows how powerful the soul of butterfly fish is.

So of course, the soul space has a strong sense of fullness.

There''s also a hint of satisfaction.

It''s good to feel full

Renault didn''t faint. The number of extraordinary creatures who died in his hands is as high as 10. The strength of the soul space is not what it used to be. Although the spirit of Warcraft is strong, it doesn''t make him dizzy.

In his reaction, "the book of thermodynamics" seems to start to turn, and strands of golden light bloom from the virtual shadow of the book''s soul, adding a gorgeous aura to the dark shadow.

Renault''s face showed an excited smile.

Page six, he''s been waiting too long.

As the shadow of the soul is gradually absorbed, the golden light becomes more and more intense. Renault can only vaguely recognize the appearance of the book of thermodynamics, which is bathed in the incomparable brilliant light, just like the book of gods full of supreme majesty.

Yes, it''s a real book of gods.

Those who are in charge of this book will hold the power of the gods!

Then something unexpected happened.

The golden light ball around the book of thermodynamics suddenly trembles. A tiny light ball separates and flies to the rune [wind] hanging in the soul space.

Renault couldn''t help blinking, wondering what the book of thermodynamics was up to.

After touching the rune [wind], the light group suddenly scattered into countless light spots, attached to the surface of the rune, and dyed the rune halo into gold.

Then all the light spots trembled violently. After a breath, they broke away from the rune, but they still kept their relative positions.

as like as two peas, a rune appeared in the same rune.

The two runes stand side by side in the void, and there is no difference between them. They just emit different colors of light. The rune [wind] emits the light of blue light, and the other Rune shines with gold light.

Reynolds was stunned when he saw it.

This is replication!

My God, the book of thermodynamics can copy the Rune of the mysterious pole.

What is the origin of this book?

What else can''t it do?

Rao Shi Renault has long known the magic of the book of thermodynamics, but he was deeply shocked after seeing this divine operation.

After circling the rune [wind], the copy Rune turns into a golden arrow and shoots at the light mass around the book of thermodynamics. The moment it touches the light mass, the copy Rune plunges into it silently.

Renault was more and more confused.

What does the book of thermodynamics want to do?

Why does it copy the rune [wind] inexplicably?

But the book of thermodynamics doesn''t answer Renault''s question. It just continues to operate on its own, just like a child playing with his favorite toy.

At this time, the golden light became a little dim. Renault could see that a strange array of runes was floating above the open book, and countless light spots poured on the array, making it more and more solid.The sixth skill appears!

Renault watched all this closely, watching the array of runes swallowing the golden light, watching the light disappear gradually. The array of runes became clearer and clearer. At the moment when the golden light completely dissipated, his consciousness could not wait to touch the array of runes.

Then Renault was stunned.

Because this array of runes is called Laval nozzle.

Isn''t Laval nozzle part of rocket engine thrust chamber?

In short, it can accelerate the flow from "subsonic" to "sonic" and up to "supersonic".

On earth, Laval nozzle is widely used in all kinds of high-tech weapons, including rocket engine, turbojet engine and turbofan engine of fighter.

But why does the book of thermodynamics make this whole thing?

Laval nozzle is more close to the application of aerodynamics, but this is clearly a book on thermodynamics. Why did it come up with runic arrays related to aerodynamics?

Isn''t this a mess?

After a moment''s contemplation, Renault suddenly realized.

If he remembers correctly, he once mentioned the case of Laval nozzle in engineering thermodynamics.

The flow process of fluid in Laval nozzle can be considered as an isentropic process and a reversible adiabatic process. There is no heat exchange with the outside world.

The first law of thermodynamics is an expression of the law of conservation and transformation of energy. In an isolated system, all internal changes are reversible adiabatic processes.

From this point of view, Laval nozzle is the application of the first law of thermodynamics.

In other words, the rune array of Laval nozzle is actually a skill derived from the first law of thermodynamics.

However, it is difficult to accelerate the air flow to supersonic speed just by simple heating and expansion. Even if it can be done, the magic power consumed is extremely amazing, and Renault can''t bear it.

But engineering thermodynamics is a mysterious book. It cleverly uses the structure of Rune [wind] for reference and creatively combines "the power of wind element" and "heat energy" to accelerate the airflow.

This is the real reason that engineering thermodynamics wants to copy the rune [wind].

Therefore, the book of thermodynamics is not only free from chaos, but also logical.

There must be the soul of an engineering dog hidden behind this book. It will not act recklessly by relying on "labor is the golden finger".

This cliff is a reasonable and scientific book!

This also means that at the beginning, the book of thermodynamics separated the rune [wind] from the body of the sorcerer snake, and the cliff was a premeditated act.

Phalaenopsis is a Warcraft, and it also has the original talent of Rune in its body. However, in the book of thermodynamics, Renault didn''t leave a single one, so it absorbed the rune directly.

In contrast, the fact is obvious.

This cliff is a resourceful and cunning book!

What''s more, if we didn''t meet the sorcerer snake, would there be Laval nozzle?

Renault was frightened at the thought of this problem.