Chapter 290 Trial Pyramid

Perhaps it was related to the life and death of her father, herself and her relatives. Song Lihua only took half an hour to prepare all the items, which was even far more than what Chu Fei needed.

Looking at the full carriage of supplies, Chu Fei even doubted whether Song Lihua had moved the warehouse directly here?

After selecting the necessary supplies, Song Lihua took Chu Fei to the entrance of the underground world and took the initiative to explain.

The underground world of Black Iron City is also at a depth of one thousand meters, and there is also a dimensional space.

However, unlike the dimensional space in Flying Tiger City, the dimensional space here seems to be able to be opened at any time, but it is not unconditionally opened.

But what is the specific opening condition, Black Iron City has not figured out for more than 120 years.

Sometimes it can be opened automatically once every three or two months, and sometimes it will not be opened for two or three years.

The fastest record is: it is opened four times a year.

The slowest record is: it is opened once every five years.

In the history of more than 120 years, Black Iron City has been opened 107 times in total. This is much better than the dimensional space in Flying Tiger City, which can only be opened once every two to three years.

The seven unexpected opening opportunities can be opened at any time. However, there are only two left, and one will be used today.

After walking underground for a while, I came to a spacious and bright "hall".

Song Lihua went straight to an "office" and then entered the password to a "security door". While entering the password, looking at Chu Fei's eyes staring at the password, she whispered:

"The password changes at any time, and there is a set of calculation formulas. Remembering the password is useless."

Chu Fei: ...

I knew it wouldn't be that simple.

As Song Lihua entered the password, a "water film mirror" suddenly appeared on the "door" in front, and then a vortex appeared.

Seeing this familiar scene, Chu Fei took a deep breath and walked forward slowly.

Will Black Iron City have other calculations? Is this a trap?

Chu Fei certainly considered these possibilities, but soon threw them aside. This is a dimensional space. With the current technological level of the end of the world, it is good to be able to open it. If you want to change it, don't even think about it.

To put it another way, I have received several inheritances and have a considerable understanding of the dimensional space. Even if there are traps or dangers, it is enough to deal with them.

Knowledge makes me fearless!

But at this time Zhang Liyu spoke, "Chu Fei, since you are here, I am going to go back and send the technology back first.

Maybe with these technologies, Feihu City's industrial production can undergo a transformation, so it can also support Heitian City."

Chu Fei turned his head and glanced at Zhang Liyu, and nodded silently. You just ran away from the battlefield, why are you talking so fresh and refined.

Even with Chu Fei's sensitivity, he found the sarcasm that flashed across Song Lihua's eyes.

However, this sarcasm was too fast, and Chu Fei didn't even have time to distinguish whether this sarcasm was directed at Zhang Liyu, himself, or Feihu City, etc.

But Chu Fei finally just nodded silently and plunged into the vortex.

The next moment, Chu Fei was stunned.

The world in front of him changed, and then he saw a "peak" towering into the clouds. As for the width of the "peak", it exceeded the limit of vision.

As far as I can see, there are five layers of this "peak", and more have entered the clouds and are completely invisible.

The width is also infinite on both sides, until it exceeds the limit of vision.

The air here is very pure, and with Chu Fei's enhanced vision, the visible distance can reach more than 200 kilometers. But even so, there is no end on both sides.

This dimension has only one building, which is the nine-story trial pyramid. In other words, the entire pyramid is this dimension. And entering this dimension is at the "first level".

Such a vast and strange dimension, I wonder how much output there is?

The dimension of Feihu City has things like elf fruits and fountains of life. Will there be similar treasures here?

Although this dimension is opened more frequently, it takes about seven days to enter each time, and the requirements for entry are not low. Compared with this huge dimension, the existing exploration is still just a drop in the bucket.

There is still 90% of the area here that has not been explored, not to mention that basically no one has ever explored above the seventh floor.

There must be treasures.

But then Chu Fei shook his head and laughed: "What are you thinking about? This time we are not treasure hunting, and there is not enough time. We must try our best to get the disc on the ninth floor.

But can I really do it?"

Squinting his eyes slightly, Chu Fei remembered Song Lihua's words and expression. Maybe she was not sure whether she could succeed, and there might be only three or four percent hope at most.

However, there is obviously no better way in the current situation.

Song Tieyun, the city lord of Song, has disappeared below the waist. Now he dares to use only the most common super-powered potion to hang the bottle, and the whole person is in a dying state.

Let's not talk about whether to save Black Iron City, just to save Song Tieyun, there are only three ways that can be thought of for the time being.

But if it is direct medical treatment, there are not enough resources, and it is too late to transform the colonization suit. In the end, there is only a gamble left - bet that I can get the disc!

Looking at the "mountain" towering in front of him, Chu Fei knew in his heart: Under normal circumstances, he would definitely not be able to enter this dimension space casually, and even if he could enter, he would not be so easy and alone.

"Perhaps, this is also an opportunity for me."

Chu Fei immediately switched his thoughts and thought of what he had just seen and said to Song Lihua. He could completely ignore the "trials" of the first three levels and fly through them directly.

In fact, if you can fly, just keep flying up.

If you have the ability, you can fly all the way to the ninth level.

While thinking, Chu Fei had already spread his wings and flew up.

But he felt interference and turbulence just after taking off. In professional terms, there was turbulence.

There was wind, but the wind direction was not fixed.

Chu Fei had been prepared for this, and it was also explained in the materials prepared by Song Lihua. The solution is very simple - great effort will produce miracles.

But Chu Fei did not follow this "experience".

This is the "trial space". Your great effort will produce miracles, which means you will slap Teacher Juan in the face. It would be strange if you can get a good score in the end. If you don't get a good score, there will be no reward - you know nothing except brute force, and you are not an orthodox scientific research successor.

It's just brute force, and the beasts are much stronger than you.

So, of course, the best way is to solve the problem!

The first level at the moment is just a basic test.

If it is flying, it is turbulence; if it is running, it is a ground obstacle.

In short, as long as you move your feet, the test begins. And what kind of test will come out is random.

After so many years of college entrance examination, can you guess how many test questions there are?

Chu Fei hovered in the air and carefully felt the wind direction and pattern. With Chu Fei's foundation of mastering the perception of wind, it took only three seconds to master the pattern.

It looks like turbulence, but it is actually a combination of simple equiangular spiral motion and Kakutani conjecture. It is also very simple to solve. As long as you calculate the pattern, you can directly avoid it.

It only took ten seconds for Chu Fei to complete the calculation and then soar into the sky.

However, after flying at an altitude of 100 meters, he encountered new turbulence. Chu Fei calculated again, this time it was a normal distribution.

After rising another 100 meters, there were more tests, but they were all relatively simple and ideal.

After flying to an altitude of one kilometer, when he reached the height of the second level, Chu Fei encountered a new problem. This time it was a whirlwind with a turn.

This whirlwind with a turning nature made it difficult for Chu Fei to maintain his balance in flight.

Feeling the whirlwind, Chu Fei thought: If the first layer is the ideal wind, then now it is a little closer to the actual situation, although only a little closer.

So it can be inferred that the wind direction at the top must be completely realistic, and it is very likely to be a roaring wind.

The actual wind direction is actually a chaotic model, and there is no precise answer, so the weather forecast is all probability, even if the probability is 99.99%, it still cannot reach 100%.

However, the test of the second layer is relatively simple, and Chu Fei only took 20 seconds to analyze it: compared with the test of the first layer, a variable is added, which is a rigid transformation.

Flying another 100 meters in the second layer, a new challenge or "test question" appeared. Chu Fei quickly analyzed it.

The second layer is very simple, and the third layer is also very simple, at least it is very simple for Chu Fei.

But starting from the fourth layer, ternary equations began to appear, and the fourth layer began to appear "modular arithmetic"; the fifth layer is a set, and the sixth layer is a matrix.

Chu Fei actually flew to the seventh layer in one breath, and only more than 20 minutes had passed.

On the seventh floor, Chu Fei encountered a problem. Feeling the strong winds around him, he sighed again, "I thought I could only solve the real problems on the ninth floor, but this is the seventh floor."

The wind direction in reality is never standard, and there is a bit of turbulence.

The turbulence formula is unsolvable, and only approximate values ​​can be obtained-just like the weather forecast, although it can be infinitely close, the approximate value is not the "correct answer" after all!

Feeling the chaotic and disordered turbulence, Chu Fei couldn't hold on after flying upwards for more than ten minutes, and had to fall to the sixth floor to rest temporarily.

If the turbulence cannot be analyzed, relying entirely on brute force, the seventh floor will not be able to gain a foothold. In fact, if you rely on brute force, even the fourth floor is difficult, and the fifth floor is out of the question.

Relying on brute force can solve some things, but if you want to sprint to a higher level, you need knowledge in addition to brute force!

Faintly, Chu Fei has a certain understanding of the dimensional space of this trial. Although Song Lihua explained some things before, other people's explanations are never as profound as his own understanding.

However, if you want to analyze the real problems of the seventh floor, you can only use a tricky method with the current cosmic brain and computing power.

If you don't use tricks, you need supercomputer assistance to calculate completely according to the relevant data of fluid mechanics.

And the tricky method is to decompose the infinite calculation of differentials into segments of finite calculations. Theoretically, as long as the decomposition is fine enough, the final result will be infinitely close to the truth.

Relying on this method, Chu Fei tried twice, and when the calculation accuracy was improved to the percentile, he finally officially stepped on the height of the seventh floor.

This is a record in the Black Iron City. But Chu Fei was not happy at all, because there was a greater goal-the ninth floor!

Relying on this splitting method, Chu Fei went all the way to the last level of the seventh floor, and finally couldn't break through.

The splitting method is not easy to use; and if you want to perform a complete calculation, the computing power of the cosmic brain is a bit insufficient, and it gets stuck when the calculation reaches about 30%.

Looking at the remaining calculation difficulty, Chu Fei didn't want to use the wisdom dew at all. Although the remaining calculation process is 70%, the difficulty is 99%!

What to do?

After thinking for a long time, Chu Fei got nothing and couldn't help muttering, "Not even a reminder."

[Ding... The first reminder: The greatest thing about human beings is that we can create tools to solve problems. Ordinary humans can't fly, but they can fly in the blue sky on airplanes. This is the power of technology, and technology itself is the crystallization of knowledge and wisdom.

Remaining reminders: 2 times. ]

There is really a reminder, or voice control technology?

However, creating tools?

Chu Fei thought: Now many mathematical formulas, such as Bernoulli's formula, are tools created by scientific researchers, and these formulas do not exist in nature.

Does it mean that if you want to break through the seventh level, you need to create a formula?

But that's not right. This test is for teenagers under the age of 18. It can't be so exaggerated.

So, it should be another tool: weapons, real technological creations, or solutions.

Suddenly, Chu Fei thought of the magic weapon (nano liquid gold) he absorbed, but just as he was about to drive the nano liquid gold, he suddenly received a warning: Please use your own ability to solve the problem.

Use your own ability? Do you want to turn yourself into a weapon?

Oh, wait, it seems that it really can.

Suddenly, Chu Fei narrowed his eyes and began to spin.

Although there are many ways for dragonflies to fly, rotation is not included - the kind of rotation with its own center of gravity as the axis, like a gyroscope.

But Chu Fei is not a dragonfly, he is an awakened one! An awakened one who has the wisdom to master technology!

After trying to change the flight mode many times, Chu Fei mastered the way to rotate himself - the force on both sides of the wings is deviated.

After trying several times, Chu Fei can rotate forward in an arc. Inadvertently learned another way of flying.

Using this rotating flying method, Chu Fei drilled directly into the eighth floor like a drill.

Then Chu Fei seemed to open his mind, not only analyzing the external environment, but also creating his own environment.

Faintly, Chu Fei mastered an element: creation!

With the mind open, the problem is relatively simple. The wind pressure on the eighth floor is a bit high. Not only is there no so-called thin atmosphere at high altitude, but there is a sense of stickiness, and the air seems to be turning into substance.

Chu Fei optimized the rotation speed according to the actual situation. After half an hour of trying, he failed... I'm a little tired. I'll take a break and think about it carefully.

Thinking of this, Chu Fei fell to the seventh floor.

The seventh floor of the stepped pyramid is full of sculptures, all kinds of sculptures.

In fact, if you break through step by step and go up layer by layer, you will also be tested on your learning ability - how to break through the next layer is written on these sculptures.

Among them, there are large pieces of reliefs, engraved with mathematical formulas, data structures, etc.

Looking at these mathematical formulas on the scene, Chu Fei's eyes lit up.

The mathematical formulas on the seventh floor are already very sophisticated.

"Maybe the technology of Black Iron City is obtained from this pyramid. But they have never come up to the seventh floor, which is a bargain for themselves.

It's just... this area is too large."

Although the area of ​​the seventh floor is already small, it is still very large, with too many sculptures, densely packed like a forest.

Faintly, Chu Fei has an unspeakable regret: entering a treasure mountain but not getting it!

Thinking like this, Chu Fei was still walking slowly on the seventh floor. Suddenly, he saw a unique model - negative pressure, or vacuum.

Through a unique flight mode, a certain negative pressure is created around the body, so that the density of the "whole" formed by oneself and the surrounding is lower than the density of air, and then one can float!

Chu Fei's eyes lit up and he looked carefully. This unique flight mode is actually derived from the flying mode of bees.

Bees rely on creating vortices to provide lift, but we know that tornadoes are also vortices, and the center of tornadoes is negative pressure.

In fact, a considerable part of the lift of an airplane comes from the negative pressure above the wing.

So this flight mode embeds the mechanical flight mode into the biological flight mode, creating a unique and scientific way of flying for humans!

"So, this is creation!

It's just that this model seems a bit complicated. If an ordinary awakener comes to learn, it will take half a month just to read these formulas and understand the logical structure.

If you want to build a model in the universe brain and apply it to actual flight, I'm afraid it will take more than half a year?!

It's time, wisdom dew, speed up for me!"