When Liu Hai stepped onto the return spaceship, he was still thinking about Professor Yan Xing's question in his mind.

What would you name your first formula in your life?

Liu Hai, who is difficult to name, feels that he has encountered a happy trouble.

I can't think of any good names for a while, so I just don't want to think about it, and I'll talk about it when the time comes.

When I came to Gulan, I only brought a backpack, and when I went back, I had two more large boxes, all of which were materials except for trophies.

Information on improving the utilization rate of spirit stones and developing spaceships that can break through the secret passage.

Of course, these are only public information in Gulanzhou, and the latest and most internal information is highly confidential, and Liu Hai can't find it.

Most of these materials were collected with the help of Bai Yansheng, although they are only public information, but they are relatively complete, and many things can be seen from them.

For example, Liu Hai can use these materials to understand the current level of Shenzhou's utilization of spirit stones, and can also understand the general situation of the current research and development of the highest-end spacecraft.

Taking spacecraft as an example, at present, in the research and development of the secret spacecraft, the Shenzhou academic community has encountered many difficulties, of which there are three main difficulties:

First, it cannot solve the problem of insufficient power of the spacecraft;

Second, it cannot solve the problem of insufficient spacecraft capacity;

Third, it cannot solve the problem of insufficient heat resistance of the surface material of the spacecraft.

The first of these is the most important.

There is a strong binding force in the secret passage, the spaceship entering the secret passage is like a person falling into a quagmire, and it is a quagmire with a long way ahead, after the spacecraft enters the secret passage, it must fly with a strong binding force, which requires the explosive power of the spacecraft's power system to be strong enough, and the explosion must be durable enough to have the basic conditions for breaking through the secret passage.

At present, whether it is Shangzhou or Shenzhou, basically the spacecraft is based on the second-generation power system, using non-attribute spirit stones as energy sources, converting spiritual energy into mechanical energy, thereby generating propulsion.

According to the data, basically all the spacecraft power research teams in Shangzhou and Shenzhou are studying how to optimize the second-generation power system, and how to use the least spiritual energy to convert the most mechanical energy is one of the most important research directions.

There are also rumors that some Shenzhou academic teams intend to abandon the shackles of the second-generation power system and directly develop the third-generation more explosive and durable power system, but these projects are highly confidential secret projects that have not yet been made public.

The second is the insufficient capacity of the spacecraft, which is directly related to the lack of power of the first spacecraft, and the reason why it is listed separately is because the insufficient capacity is due to the insufficient power of the spacecraft, there are many other factors.

For example, many of the necessary devices on the spacecraft are relatively large now, and the secret spacecraft needs to fly for a long time, which requires more space and load to support the crew's living supplies and energy reserves.

So far, the empire has not reached any secret realm, so it is not known how long the spaceship will fly in the passage, and I don't know how much energy and living materials to prepare is enough, exploring the secret realm is an extremely risky adventure for a civilization of this level, so naturally the more fully prepared, the better.

Therefore, although I don't know how long the secret realm fellow Dao is, based on the early exploration, everyone has a common knowledge, that is, the current capacity of the spaceship is definitely far from enough.

The third is that the surface material of the spacecraft is not heat-resistant enough, which is a big problem that must be solved.

The spacecraft flies in the secret passage at a very fast speed, and interacts with the binding force of the passage, which will produce a large amount of heat energy, according to the experiments done by relevant scholars at the front end of the entrance of the secret passage, from which the data is obtained, the peak temperature has exceeded 32,000 thousand degrees many times.

According to Liu Hai's knowledge, the current public data of the academic community shows that the heat resistance of the most heat-resistant rune material is about 15,000 degrees, which is far from 32,000 degrees.

All in all, these three major difficulties are not solved, and if you want to explore the secret realm, it is a fantasy.

On the way back, Liu Hai flipped through the two boxes of materials, combined with the information he had consulted in the inheritance beads, and had some ideas in his heart.

"The first and second, insufficient power and insufficient capacity, in fact, all involve the utilization efficiency of the spirit stone, once the utilization efficiency of the spirit stone is greatly improved, the power system will be greatly improved at least in terms of endurance, and the capacity of the spacecraft can also save a large part of it......"

"And improving the utilization efficiency of spirit stones itself has the most direct help to solve the spirit stone crisis. ”

"So my thoughts are right, in the next step, my focus should be on the yin and yang of spiritual source science......

As early as 19,000 years ago, some scholars put forward the theory of five elements of elementary particles, and later with the development of civilization and the improvement of cognitive means, 14,000 years ago, the academic community observed the existence of five elements of elementary particles.

Then the academic community discovered that the five elemental elementary particles evolved all things in different permutations and combinations.

The discovery of the elementary particles of the five elements is an extremely important progress in the history of civilization development, and it is precisely because of this discovery that the civilization that originally developed into the inert stage began to enter the explosive development stage, and the alchemy, pill medicine, and rune array science all entered and began to make rapid progress, and in just over a thousand years, the entire civilization and society have undergone earth-shaking changes.

For example, because of the development of building materials, even high-rise buildings appeared in Xiashu at that time. It was also during that time that there were various psychic vehicles and the first spaceship that could be lifted into the air.

With the further observation of the Five Elements Elementary Particles, it was found that the Five Elements Elementary Particles Theory could not explain the existence of one thing, that is, the Spirit Stone.

At that time, the academic community believed that the attribute spirit stone was composed of pure and single five element elementary particles, and the non-attribute spirit stone was composed of five elements of the same number and a neat and special structure of the five element elementary particles.

But in fact, when people observe with more and more advanced observation methods, they find that this is not the case at all.

In the fire attribute spirit stones, people have observed the existence of fire line elementary particles, but the number is very small, and it is more of a smaller existence with special fluctuations. Academics refer to this existence as "fire spirit particles".

Similarly, there are Water Spirit Particles, Earth Spirit Particles, Gold Spirit Particles, and Wood Spirit Particles.

The Attributeless Spirit Stone is a mixture of these five spirit particles.

This is the well-known spiritual source "Five Elements Spirit Particle Theory".

It was the emergence of this doctrine that began to have the use of spiritual waves, and the spiritual talkie.