" As everyone knows, there are countless Cultivation Systems, but they have the same basis, which is the absorption of energy from outside the body to strengthen the body and extend the life span. Energy can be considered as a mere fuel for the use of laws such as the law of Flam, Void, Wind .. etc. Of course, the law that sits at the top and can be considered the root of all laws is the Heavenly Law that no one can control, all we can do is control a small part of it, and for that, we must understand the law that guides it, but these laws differ according to the energy Cultivated here are many types of energy, but the most famous are four, Qi, Mana, Void Energy, Destruction Energy.''

Four crystals appeared floating around the Qi Ye, each of which released a specific kind of energy.

" Qi is the basis of life and is the most common forms of energy prevalent because most of the organisms living and non - living based on the Qi, of course, Qi varies according to its source, such as life Qi, elements Qi, death Qi, etc. the distinctive thing about the Qi is its simplicity and effectiveness in the use, once it is controlled, it can be used at will, just as the laws that control Qi are the simplest of all laws, of course, taking into account the limits of the body.''

" Mana is a form of energy similar to Qi and enjoys almost the same characteristics, but use more complex because it is more complex and it is difficult to understand the laws so, except the demons forced to use Mana, everyone uses Mana in the Arrays because it has a destructive power greater than Qi."

"The Void Energy is somewhat mysterious, but we can say that it is the Energy to tamper with time and space to create a private space or move very quickly or hide from view, in short, this is the type of energy that is perfectly suitable for assassins."

" As for the Destruction Energy, it is simply destruction, the power to destroy everything, including the self, and it is rare to find a person who practices this energy because it contains only one law, which is the law of destruction, which greatly limits the capabilities of Cultivators."

Wushuang Ranying raised her hand and asked, " Does this mean that the Destructive Energy is the best in the battles? In this case, why do we not cultivate it? Even if it contains only one law, but it is very appropriate in battles."

" This is because controlling the Destruction Energy is very difficult, and in most cases, the Destruction Energy gets out of control, which leads to self-injury. Therefore, most Cultivators avoid using the Destruction Energy, but the most important reason is the absence of the law of longevity, which means that the Cultivator's lifespan will not increase every time he achieved a breakthrough and in this case, the Cultivator is restricted by the life of his race, which is very bad because not much can be achieved in a short period of time."

" This explanation isn't complete."

A voice rang unexpectedly to the lecturing professor's words.

Everyone stared in astonishment at Shi Tu because they didn't expect him to initiate trouble, shouldn't Jiao Lang be assumed to be the one with the sharpened tooth?

" Shi Tu! how dare you say that the professor is wrong? Who do you count yourself? You are just a loser who used a hundred years and barely reached the second level."

Quickly, Jiang Beizhou stood by scolding Shi Tu and distorting his words. He couldn't forget the previous humiliation. This is a great opportunity to return the insult, so how could he miss it? He may also be able to approach the lecturing professor.

Shi Tu completely ignored Jiang Beizhou, Shi Tu was excited to experience the life of a student but didn't expect to meet such a bad education on the first day, it is well known that some things can't be understood or will not understand until they reach a certain level, but how can a lecturer make such a mistake?

" You say that my answer is incomplete? In this case, tell me if I am missing, but if you don't give me a satisfactory answer, you must be prepared for punishment."

Of course, Qi Ye wasn't happy with Shi Tu's criticism of him, he is a Cultivator who reached the middle of the Second Step and although he had been stuck at this level for thousands of years but he devoted himself to studying rather than trying to achieve more breakthroughs, because of this he is very confident in his knowledge so how can a boy question small to know?

Despite this, he decided to give him a chance because he definitely doesn't think he knows everything and may find in the river something that will not find in the sea.

Shi Tu replied, " The use of the Destruction Energy is avoided because after reaching a certain level of powers, the Destruction Energy will get out of control and destroy not only the body but even the Life Essence, which greatly reduces the lifespan. Although this is a big problem, it is nothing in front of the great benefits that can be obtained. Especially during combat, and it isn't difficult to constantly obtain treasures to renew the Life Essence, after all renewing the Life Essence is much easier than extending the lifespan and it isn't difficult to take medicinal pills, so this doesn't pose any problem for those with a great background, so why do you think that it is The Destruction Energy is avoided?''

It isn't surprising that the powerful are followed without thinking, after all the word power is always the truth, because of this, people have become avoiding using Destruction Energy only because they have been taught that it is dangerous without knowing the real reason, Shi Tu thought that a lecturer should know the real reason but disappointed.

Qi Ye looked stunned for a moment and remembered that he had read something similar to this before, but he considered it just nonsense because there was no evidence for that.

" The real reason is that the Destruction Energy also destroys all kinds of external support. will no longer be able to take pills or seek someone's help to cure or absorb the natural treasures. Therefore, in return for the tremendous fighting power, you lose the ability to receive external support and you will not be able to live any longer than ten years."

Qi Ye nodded and said, " I read this before in several books, but it is just to talk without evidence. How is it possible that there is such an unfair thing? Your argument is weak."

" Heh."

Jiang Beizhou didn't hesitate to mock Shi Tu, "Did you seriously think that your knowledge exceeded that of Professor Qi?! I advise you to go apologies to Professor Qi."

" I heard enough, although this proves that you researched a little, but your knowledge is shallow and didn't search enough. You shouldn't rely on one source of information and search from several sources since it is your first time, I will forgive you, but you should throw your arrogance away."

Qi Ye seemed to lose interest and wanted to complete the lecture without allowing Shi Tu to provide evidence of his words.

" Tsk, what a waste of time."

Shi Tu shook his head and stood to leave, but a Dark Elf girl stood in his way.

She was one of the four who were brought from the exam places for other regions.

" Where are you going?"

" I have no interest in hearing more."

" Just stay, you don't have to be stubborn like this, he's a Professor. Even if you think you are right, you have to give him some face. You will not benefit from the opposition of a Professor."

Shi Tu smiled and said, " You're a little nice considering we're strangers, but you don't have to care about me."

Shi Tu then ignored her and left, followed by Jiao Lang.

Seeing this, Qi Ye didn't stop them from leaving.

The Dark Elf girl sighed and shook her head.

" Heh, why should you fake kindness? This isn't befitting of a relative of the traitorous Queen."

A young man with black skin and blue eyes said, he gave a slightly bleak aura and didn't hide his hatred for the Dark Elf girl.

Hearing the phrase ' traitorous Queen ', Arcana's expressions changed dramatically and her face filled with shame and remorse.

" You Devils, are you still clinging to the past? So pathetic."

" What?! "

The Devil stood up ready to fight, but the voice of Qi Ye stopped them.

" Enough, you can fight later. It's the lecture now."