The study of the role and influence of sound at different frequencies opened the door to modern acoustics, and later the research on ultrasonic and infrasound waves continued to deepen, coupled with the introduction of quantum theory, it became a consensus that sound can cause drastic changes in matter and energy in the microscopic world.

Although Qi Yuan and Zeng Li are not professional researchers in this area, they have common sense.

If you want to artificially produce enough ultrasound for experiments before the disaster, you need to build a special laboratory and corresponding machines with the backing of a lot of money, and even need the national energy department to allocate a huge amount of applicable energy to support it.

But now a second-level spell can solve this problem! The caster directly builds a spell model built by magic, and then he can produce a sound, and what frequency he wants depends only on the caster's will and knowledge!

Even though Qi Yuan doesn't have much professional knowledge about acoustics, he is proficient in the use of spells!

One by one, the smashing sound waves are used, and I don't know which frequency is the most effective, so let's try them one by one! Anyway, the higher the frequency, the more obvious the reaction is that it does not run, and even when it is high enough to a certain extent, the solid cannot be used as a continuous propagation medium!

When molecules become stations in sound propagation, as long as the follow-up continues, these stations will always be blocked and burst, which is the manifestation of material stress!

Just like a server that is attacked by traffic, as long as it does not have an effective firewall, no matter how powerful the computing power is, it will not escape death.

Qi Yuan gradually found the sound wave frequency that could best cause the change of the red energy flow, so the next thing to solve was to increase the duration of the spell of smashing the sound wave, could this stump Qi Yuan?

Finally, the entire circle dissipated into the air silently, as if it had never existed before.

As soon as this magic circle was destroyed, the fire soul that had always been majestic was immediately deprived of the protection of the flames outside its body, leaving only its huge body and no arms.

In this way, the soul of fire is a deformed giant, the facial features that once haunted from time to time are completely gone, and a face is flat and flattened with nothing.

The coloured rays that had once been obscured by the flames of the sky finally showed their power, leaving a large crater in the giant's body with each hit, and surprisingly the fire soul's wounds contained only billowing black smoke.

Qi Yuan was so tired that he stood and watched the battle in the distance for a while, and then summoned a floating dish to sit on, and the charcoal ash on the ground made people not want to be contaminated.

At this time, a floating saucer technique made Qi Yuan find that the magic power was quickly calming down, his spellcasting ability had been greatly restored, and the flickering technique and teleportation technique would be used.

Slowly drifting out of the area covered with carbon dust, the soil color on the ground really began to return to its normal yellow-brown, and the faint blue feeling quickly faded, but I don't know if the plants in such a large area affected by the magic circle will come to life, if all of them die like this, with the current state of people taking care of themselves, the ecological environment here does not know when it will be repaired by nature.

In Kyushu City, Kyushu University, which was re-listed in the garrison-controlled area, has one more college, called "Magic Academy".

At present, this academy focuses on the arcane field, relying on the manuscripts left by Qi Yuan, and a group of young people represented by Zeng Li, Cui Mengmeng and others have quickly completed the transformation from students to teachers.

In the past half a month, two crash courses have taught students of all ages that not only teach some much-needed and practical low-level spells, but also have a deeper understanding of the basics of arcane arts.

In fact, like many disciplines, Arcane is the same as many disciplines, seemingly simple and low-level things, which are fertile ground for cultivating the foundation of the discipline and the mode of thinking of the discipline, and the more firmly the foundation is laid, the smoother the search for higher and finer places.

The arcane aspect began to get on the right track, and the theological school also began to seek development, but at present, the few people who are employed as priests and paladins are empty spell slots and have not been able to obtain divine magic, and only those who can perform divine magic are those who are employed in the druid and ranger professions.

What Huang Ziyun and others initially guessed based on game experience became a reality, and voices began to appear in the control area asking for active contact with the friendly intelligent creatures of Evaniel, and the power of the resurrected and dead has been known to everyone, and most people hope to save their deceased relatives by learning the magic from visitors from the other world.

Moreover, Ospen's affairs were not deliberately concealed at the beginning, and the current great progress in the arcane is also closely related to this goblin archmage, so these voices have begun to grow louder and louder, and there is a tendency to become mainstream.

However, these distractions did not affect the young people who were immersed in academics, and these major matters were considered by the national organizations that had already been connected, and they had already put their hearts and minds into the arcane.

Zeng Li, who was no longer satisfied with the arcane model itself, began to think about the question left by Qi Yuan, mana, magic, models, model structures, how are these new things related to the inherent things that have continued to this day?

Is the acid splashed by the spell acid different from sulfuric acid, hydrochloric acid, or nitric acid?

Is there any difference between the principle of the light source created by the spell dance light technique and the principle of burning to produce light, and what are the differences?

Is the freezing effect caused by the spell's freezing rays a three-state change or a heat transfer to achieve the goal?

When Zeng Li fell into these problems that were difficult to choose a starting point, Cui Mengmeng and Liao Yongjian came to the door together, everyone made similar progress, and their thinking patterns were even more similar, so it was not surprising that the same problems occurred.

"I suggest going to Kuai Gong!" Liao Yongjian got straight to the point: "The three of us are facing the same problem now, so it is better to ask Kuai Gong to come forward and apply for material and personnel help with the state." ”

"Starting from the magic itself, everyone agrees on this entry point, but to achieve it, it is indispensable to make observation instruments, and at this point, more people need to work together!" Cui Mengmeng added.

Zeng Li himself is a disciple of Professor Kuai, and he can be said to have the biggest face, knowing that these two junior brothers and sisters are here to make themselves pick the lead, he does not shirk at the moment: "Let's go, let's go to see the professor together." ”

Professor Kuai was reading the document when he saw a few students coming, so he beckoned them to find a place to sit on their own: "Drink water and pour it yourself, you're welcome." ”

The three of them greeted one by one, and then Zeng Li spoke: "Professor, the three of us are making similar progress so far, and they are the questions I asked you yesterday. Today we discussed that if we want to start with the magic itself, we need to make an observation instrument, but there are too many related disciplines, and we need support in both human and material aspects. ”

"Then you are here just in time!" Professor Kuai raised his head with his glasses, and raised the document in his hand as he spoke: "This is sent by Ou Jingzhong from the Capital Academy of Sciences, and he is also organizing this project, so ask me for someone!"