If the ideas of the Children of the Abyss to make the town become more and more prosperous in the subtle way can be classified as the cleverness of mortals, then the simple description of the connection and change between the four elements of "earth, water, wind and fire" can already be called great wisdom!

Although this knowledge does not seem very profound, Cassena thinks that there will probably not be a second person in Valhalla who can systematically summarize the interrelationship between these four material elements before these two lectures. Even if there were, it should all come from the same person, at least in the vast expanse of stormy seas, and Kasena had never heard anything like it.

It wasn't that Kasena suddenly looked up to the children of the abyss, but that these knowledge of different substances was enough to be listed as the universal benchmark law for all things. At first glance, it may seem like an academic achievement, but in fact many applications and advanced theories are all based on it! The foundationless "castle in the sky" is bound to be limited in its achievements, even if it is magnificent! At least the young lady from the stormy sea can assert that if she tells the violent temperers of the "flame" form, in time they will surely rise to a whole new level of their ability to control and destroy fire!

At this time, Kasena had basically let go of her careful thoughts. Constrained by her oath, if she showed her true strength to mortals without encountering a forced situation, she would inevitably be punished by the elders of the family when she returned. Although she was very annoyed by the promise she made after drinking, when faced with the son of the abyss, who had hidden hills and valleys in her heart at a young age, and whose understanding of the laws of all things was far ahead of her own, Kasena was actually ready to fulfill her promise.

Don't say that the members of the Star Feather Family, the dominant clan of the entire Storm Sea Domain, unless they are facing their true enemies of life and death, there is no one who breaks their word and becomes fat!

But on the other hand, she also wanted to have a deeper understanding of this amazing prince of the Demon Realm. Curious to know if there was more amazing wisdom hidden in this incredibly young soul.

So after listening to her first Orian lesson, Kasena decided that she would listen to all the lessons taught by the Children of the Abyss herself. In addition to being a powerful warrior, this young lady is also a polymath with a strong thirst for knowledge.

......

"Today I'm going to propose a whole new concept here, a unit of description of mana concentration, specifically the Mana ...... contained in the unit space during the spell release."

"What is Mana?" asked the elf princess beside her in a low voice.

"See that elf on the desk over there?" Illion pointed to the goblin in the corner who was listening to the children of the abyss.

"Isn't that one of the goblins who runs the Freezing Point shop in Andrari?"

"She's Mana. ”

"......???" describes the unit of mana concentration, specifically referring to the number of goblins in the unit space during the spell release process!?

"Mana refers to the maximum amount of magic that the little goblin named Mana can summon when he casts a spell with all his might, and is a unit invented by His Highness to describe the strength of mana. The strength of the magic represented by a 'Mana' is roughly equivalent to that of a fireball. ”

"What about the fireball spell I unleashed?" Casena imagined as she looked at the ceiling.

"Of course, it's the ordinary fireball technique released by mortals!?" the elven princess grumbled angrily.

Most of the magic spells are first gathered around a "point" in the process of releasing them, and the diameter of the magic group itself is difficult to measure without discussing the calculation of the volume of the sphere. Most magic powers begin to manifest in the form of "light", but when you make up your mind to measure the volume of a disembodied sphere of light, you will find that there are only various obstacles in front of you.

The first is how to define the "boundary" of the photosphere. The absence of an entity to touch means that the "ball" itself is actually just a light source composed of energy, and its "boundary" is just a visual information received by mortals.

To put it simply, the same ball of light must look different in "volume" during the day and at night due to its relative brightness. Then there is a difference in the size of the magic ball between different races, for example, in the eyes of the elves who are more sensitive to magic, it will look a little "bigger" and "brighter" than the eyes of the orcs. In addition, the caster's mood changes when manipulating mana are also likely to affect the amount of mana in terms of cohesion. Sometimes in the process of casting spells, it is a little more seriously frightened, and it is normal for the magic power that has been condensed to collapse and disappear into invisibility, and if it is a high-intensity magic power under the reluctance to manipulate one's own extreme ability, it is not impossible to be directly counterattacked.

"Your Highness, do you think it's okay to use the crystal balls commonly used by wizards as a standard size?"

"It's a very good idea, we call a magic ball smaller than this volume a condensed state, and a magic ball larger than this volume is called a fugitive state. ”

"Is that decided? Wouldn't it be a little too hasty?" said Kasanna, who was listening attentively.

In fact, it is not completely unreasonable to have such a vague standard, for example, it is not difficult for Andre to gather the dark magic into a "fugitive" volume when he manipulates the dark magic, but if he manipulates the life magic, he cannot gather the life magic of that size outside the body, and forcibly doing so will only dissipate the life magic beyond his control ability outside the body. The amount of Mana contained in the specific mana of the same size orb will also be different, in short, this is the result of the final decision involving many factors such as the caster's elemental affinity, control, mental power, etc.

Coupled with the fact that even standard Mana cannot be measured by any precise means, and can only be evaluated by people's experience and feelings, so the children of the abyss, which are considered very esoteric to the uninformed, are at best a vague data "for reference".

"Some time ago, through a preliminary study of Kassena's magic application skills, I found another description unit that needs to be added, that is, the change in the amount of Mana when the magic intensifies or manifests in a unit of time. The effect of a Mana's fire elemental being released in a single breath and being consumed in the blink of an eye is far from what it can do. However, the manifestation of most elemental magic is usually only instantaneous, and for this we must introduce a new unit of time, the 'second'. 3,600th hourglass hour ......"

"If it is stipulated that a Mana is released within a second as a magic 'intensity', that is, a 'Naer', then I think the two values of Mana and Naer are enough to describe the intensity of a spell more comprehensively......"

"Does this really have anything to do with me?" Cassena became more and more unsure.

"Isn't it because your magic control skills have left us mortals far behind?

......

Listening to Andre teach had familiarized Kasena with a way of thinking that was different from almost anyone she had ever known before. The Son of the Abyss meticulously took all the questions to the limit of what he could do, and she couldn't quite understand why this young man named Andrei would take anything he knew to the extreme, leaving behind so many "data" and "units". Intellectual curiosity is a very simple pursuit shared by all intelligent beings, but the young lady from the stormy sea feels that André Gesarez's desire to control knowledge is different from that of all others.

Through those seemingly complex units, he was able to accurately calculate the buoyancy of wood in the water, and he told everyone that the speed at which objects fall is not as closely related to their weight as people think, and that feathers and leaves fall slowly because they are subjected to the resistance of "qi" in the process of falling, and this force that is often overlooked is not fundamentally different from the "wind" that people feel when they run at high speeds.

He taught the students of alchemy how to make a clear and translucent silver mirror with the use of sacred tree amber and "water metallurgy", the assembly of a "clairvoyant" made of two curved pieces of amber, the "compass" made of magnetized magic iron, the principle of "bursting" combustion, the new linkage structure of the gear type and the rotating shaft type of a hydraulic mill, an overview of the role and principle of the circulation of life and blood, a brief analysis of the composition of the atmosphere and their relationship to life and combustion, and the reason that light is more important than sound is to see lightning and then hear thunder"Fast" ......

After being "washed" by a flood of knowledge, Kasena found that she had mastered so many mysteries in just over a month that she had never cared about! She suddenly had an idea in the dark that she thought was extremely ridiculous but could not refute - perhaps this magical child of the abyss had already understood all the secrets and laws of the world except magic!!

It's no wonder that the elves and dwarves are willing to do everything they can to provide Valhalla with the best possible conditions. This is only because they know the wisdom hidden in Andrei's heart far more than they do!

Kasena wanted to stay here and find out all the mysteries of the whole world that Lord Andrarui knew, but according to the orders of the elders of the clan, the time for her to leave the Stormy Sea to communicate and train was already limited. If you don't return after the deadline. Not only will the same clan forcibly bring themselves back, but blatantly violating the wishes of the elders will more likely lead to a hundred-year ban punishment!

So no matter how much she wanted to stay here and absorb more of the esoteric wisdom that came from that black-haired, black-eyed son of the abyss, there was no better way. I can only hope that the elders will be "extra-legal" because of the knowledge of the laws of all things that they have brought back, and send themselves here again to devote themselves to studying.

As the return date approached, Cassena began to become more and more agitated, and the young lady who had suffered from gains and losses was no longer the confident and charismatic appearance she had at the beginning. It was the first time she had a sense of humility towards polymath other than the elders...... However, Valhalla still has unfulfilled promises to fulfill before leaving!

"Wise son of the abyss, what is it that makes you want to see my 'true power'?" A few days before deciding to leave, Kasena approached the ruler of Valhalla.

"That is, of course, in the hope that by studying the power in you, you will be able to come up with the mystery that will allow your not very strong body to unleash such amazing power. ”

"Is that really the case? But Kasena may be about to disappoint you, Your Highness......"

The Sons of the Abyss's reasoning did not surprise her, countless mortals had thought or tried to obtain the mysteries of power from their own people, but few had succeeded in thousands of years. Even those so-called "successful people" are only different from their own people, because no matter how profound their wisdom is, they cannot really bypass the chasm that blocks mortals like a moat - their so-called talent is just a joke in front of their own people, even if they are Andre, the son of the abyss, and Illion, the son of the earth, who are like the pride of the sky in the eyes of others, the same as the sky, Compared to the dragons of the sea and the children of the spirit realm, they are just ordinary people!