The one from teacher Claire is puzzled, while the one from Charlotte is surprised.

"Principal Ian gray, are you serious?"

Teacher Claire first asked, in her cognition, this useless headmaster hardly knows magic, never cares about academic affairs, and even doesn't care about students' learning problems. Now suddenly speaking this kind of words, is she making fun of herself?

To tell you the truth, teacher Claire didn't think that Lena could understand any word on the test paper, so she was very impatient. She didn't deal with Lena several times, and she couldn't see that the soul of the headmaster had already become another person.

"Mr. Claire, I think we should be more tolerant to our students. We shouldn't deny her ideas with that kind of tough attitude. At least, she thought about it, didn't she?"

Lena's corner of the eye scanned the other papers on the table, and he could see that the answers to several papers were exactly the same, obviously reciting the description in the book.

To tell the truth, he is still in a trance, but his sense of responsibility as a teacher makes him unable to make a special student lose the heart of seeking knowledge. Lena himself has a lot of curiosity about the magic of the world. Therefore, for various reasons, he decides to find out whether Charlotte's statement is correct and what his knowledge on earth is How much can be applied in this world.

"But her thinking is totally wrong. The theory of fire element is a great theory discovered by master hornheim 300 years ago and the cornerstone of modern alchemy. I don't think a mage apprentice can overthrow this theory so easily."

Teacher Claire was stunned by what Lena said, and then retorted, but her attitude softened. Maybe she thought there was a little truth in Lena's words.

"If religion comes from faith, then magic begins with doubt."

Reiner changed what he had heard in his last life and continued.

"Why don't we hear how Charlotte came to this conclusion before denying it?"

When she heard Lena's words, Xia Luo's eyes brightened, and she immediately looked at the headmaster who didn't look very reliable.

Although the principal Ian Gray's style is very bad, at least he is willing to listen to his own explanation instead of blindly negating it like teacher Claire. From this point of view, Lena's reputation has increased by at least 10 points in Charlotte.

Of course, the full mark is 100.

"Well, Charlotte, tell me about it."

Teacher Claire shrugged helplessly and motioned to Charlotte to explain.

"Well, I first realized that this possibility was an experimental error."

Charlotte thought for a moment, organized the language and then said.

"Originally, I wanted to heat limestone at high temperature to get white rock. Generally speaking, this experiment should use an unclosed container, but I made a mistake at that time and used a closed flask."

Lena didn't understand what limestone was and what white rock was. Seeing his puzzled expression, teacher Claire sighed and explained.

"Limestone is rock that can be seen everywhere, while white rock is a special kind of stone that can be dissolved in water."

As she spoke, she lamented why she had to listen to Charlotte's explanation with the headmaster. She felt that she had been fooled.

After hearing this explanation, Lena soon understood that the so-called limestone and dolomite should be limestone and quicklime. This reaction is a basic experiment in junior high school chemistry. The reaction of the gas produced in the experiment, carbon dioxide and clarified lime water is also one of the most classic enlightenment experiments.

"After heating, I found that there seemed to be some gas in the flask, and when the tube was used to lead it out, the flame of the alcohol lamp went out directly."

Charlotte explained briefly, looking at Lena and Claire from time to time, paying attention to their expressions.

"According to the theory of fire, it's impossible."

Then Lena opened an alchemy book by his desk and found the chapter on fire elements along the table of contents.

"The element of fire exists in all things. When matter burns, the element of fire will be released to produce a flame. When matter loses the element of fire, it will become dead ashes. When ashes get the element of fire, matter will revive. The specific process of combustion can be simply described as follows: matter (combustion) = element of fire + ash.

- "Introduction to alchemy", in this description, there is no mention of the generation of gas in the process of combustion, so what is the gas that can extinguish the flame and where does it come from?

Of course, Lena can tell Charlotte that the gas is carbon dioxide, which is limestone, that is, the compound produced by the reaction of carbon element in calcium carbonate and oxygen in the air. But if they say so directly, they will not believe that Lena also needs more arguments to prove that carbon dioxide in this world is the same substance as that on earth.

"Why don't we go to the lab and reproduce this experiment?"

When Lena puts forward this opinion, Charlotte opens her eyes slightly. She thought that Lena just wanted to fight against teacher Claire, but she didn't expect that the headmaster really believed in herself, which makes the girl feel a little incredible."Experiment?"

Claire was obviously more surprised. She looked up and down at Lena with a look at the madman and confirmed.

"The experiment you are talking about is an alchemy experiment?"

She didn't even know if Lena knew the meaning of the word experiment. In teacher Claire's impression since she was a child, nobles were all ignorant. Especially when she was five years old, she was bullied by an unknown little nobleman and cried several times. This impression was deeply rooted and can't be changed any more.

"Of course, Mr. Claire, what do you think I'm talking about?"

The attitude of Lena naturally made teacher Claire feel a little unhappy, as if he was the one with no culture.

"If we can get the same result, can we say that her conclusion is reasonable?"

"It's impossible. If the theory of fire element combustion is wrong, all the alchemy papers have to be rewritten in the past three hundred years, but we have accomplished so many great works on this basis. Do you want to deny the contribution of those great mages?"

Teacher Claire's tough attitude gave Lena a headache.

This guy is too stubborn.

Lena thought about it. I'm afraid this kind of guy with iron head can't do it on the front. He has to detour.

"Mr. Claire, are you afraid that Charlotte will prove her conclusion right?"

He used the provocation, which made Mr. Claire jump up immediately.

"Who said that? I won't be afraid. Behind me are the three hundred year old alchemists!"

The effect is outstanding.

As soon as the words came out, Mr. Claire knew that she had been schemed by Lena, but on second thought, she thought it was an opportunity to punish the unreliable principal, so she said.

"But if it turns out later that the theory of fire is correct, you have to pay a price."

"Well, of course, what do you want me to do?"

Lena didn't expect this woman to be so simple. She asked in a daze.

"Well, why don't you... Put on your skirt and run around the square ten times at the morning meeting next week!"

Mr. Claire thought for a moment, then said, but the content surprised Lena.

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