Originally, Cheese did not think that the Gray Tower also had a similar energy core, because the spells in the Gray Tower were higher and restrained than the City of All Laws in terms of level, which means that this tower can use a smaller amount of magic to operate the incredible things in the tower, and it also means that it requires almost no additional energy supply.

But if the gray tower actually hides some functions and systems that he had never expected before, then the situation would be different. For the greenhouse in front of him, it requires stable temperature, in other words, heat. This is an overly luxurious resource on the ice field. Even the fortresses and shelters built by the gray robes themselves cannot build a system that can be heated continuously.

The difficulty is on the one hand, and on the other hand, there is no material found on the endless ice field to serve as the basis for heating. Unless the ash tower is so sluggish and no geological activity occurs.

Then the energy source of this greenhouse is likely to be similar to that of the City of All Things, using sunlight or wind to operate. Simply put, even if a mage wants to use the invisible and shadowless energy of light and wind on a large scale, complex equipment is required to ensure conversion efficiency and consumption.

At the same time, it is best to save these energy into a flexible intermediate state that can be used at any time, rather than like a windmill mill, where grinding cannot be done without wind. After counting this set of requirements, it is unlikely to say that there is no energy furnace or energy core in the gray tower. But what form does the core exist and where?

"There are also things that are returning here. It's somewhat abnormal." The curse crow held a few fresh fruits in his hand and said with a strange expression. These red fruits are beautiful in color, and there is some dew hanging on them.

But what is strange is that the plant subjects that should have nurtured them had already died in the cruel competition of the greenhouse due to the plunder of other plants, withering and rotting, leaving only remains that can be barely identified. The rotten remains cannot produce such healthy fruits. I believe they were all produced by Afus while he was taking care of the greenhouse and returned recently.

"Even the fruits will return? The teacher will not do such things even if he is casual." The collection of books in the library has certain value. The medicines in the medical room are of high value.

Fruits in the greenhouse? Cheese and Crow can't figure out why they are casting the same spell as the above. If the First Gray Robe purposefully hides certain things in the tower, then there shouldn't be any of these fruits in his purpose.

Unless the regression phenomenon that occurs in the tower is not completely controlled, some of the right to choose things hidden is not restricted by the caster.

"If so many things in the tower can be divided into different realms, the spells used will definitely be difficult to be accurate to perfection. The aftermath of magic is likely to randomly generate victims within a certain range."

Cheese tried to build similar spells in his mind, and the conclusion was that it could not be simulated. Knowing the principle is one thing, being able to understand multiple realms and accurately split different characteristics of a thing into the corresponding part is another thing. Cheese now lacks the understanding of multiple realms and the means to split things conceptually. Therefore, what he said can only be guesswork.

"Maybe so. But there is another thing that puzzles me." The curse crow said and took a bite of the fruit, which of course would not bring danger.

Although this fruit has been ripe for too long in theory, all parts of it have been split, like arrows flying in the air. The arrows shot out seem to be natural to others to move, but if time is sliced, from extremely slow time periods, the arrows in each segment are still in the air.

Of course, this discussion is not really about proof that the arrow does not move in the air, but is intended to illustrate the detachability of time and the non-absolute relative relationship between stillness and movement. The fruit in the hand of the crow is another version of this discussion, but with the intervention of magic, it really accomplishes a certain degree of immobility. Now the flesh chewed in the mouth of the crow,

There is no difference between it and before it is split.

"If there are more than dead objects returning, right? This is reasonable. If the teacher uses this spell not to hide, but to exile some enemies entering the gray tower, what we see now is just the effect of the aftermath of the spell..."

Cheese followed the curse crow's idea of ​​splitting magic that could affect living creatures, and then considered the situation under which the First Gray Robe would use it. Enemy invasion was the most likely option he could think of, because he could not or did not want to defeat the invaders head-on, the First Gray Robe chose to exile them to the future of the time.

"What is worth doing this? If he can split his opponent into fine slags that cannot even affect time, why doesn't he destroy them directly?" Zhuao weighed the fruit in his hand and raised questions about the cheese's conjecture.

Indeed, with the means of the First Gray Robe, he has placed his opponent in a random position. Why don’t he deal with them directly or simply exile those intruders to some other place, but leave them in the Gray Tower in a completely undamaged manner? Is there any benefit in doing so?

"The exam. Just like he did to us in the past, what if it was an exam? He used various arrangements to make sure that we would gather at this time in the gray tower and release opponents from the past to test whether we were qualified as adults."

"What is enough? We are already independent gray robes. He has no more things to teach us, nor any more skills we must master."

The magician frowned, feeling helpless about the idea of ​​cheese becoming increasingly outrageous. Since they became adults, the First Gray Robe has indeed not asked them for anything.

Cheese didn't continue to say it. In fact, in his heart, there was something worth the teacher of the gray robe who spent so much effort to test the students, that was the gray tower.

This mage tower that is still giving them surprises can only be controlled by the most outstanding spellcaster. Anlina is already a vampire of the true ancestor level and can gain a place even in the mythical age. However, she is not very different from the gray robes in the magical way, and she even neglects the study of magic because of her original power.

Otherwise, she would not be unable to leave the stargazing room now, and as the controller, she would be bound by the gray tower.
Chapter completed!