Although Xia Luo's experiment could not completely overturn the fire elemental theory, it at least proved from the side that this three-hundred-year-old theory had loopholes, which made Teacher Claire waver.

Reiner's next experiment was a complete rejection of the traditional combustion theory, and what he saw with his own eyes was shocking.

She felt a wave of vertigo, a magical backlash caused by wavering willpower, a rare occurrence that only occurred when some of the ideas on which the mages were based were attacked.

It is said that in ancient times, due to the establishment of many innovative systems, there were mages who died directly in the head because of such an impact, but in modern times, with the gradual improvement of people's acceptance, no matter how novel the theory is, it will not lead to the recurrence of that scene, but such backlash occurs from time to time.

"Teacher Claire, what's wrong with you!"

Reiner hurriedly hugged Teacher Claire, and at this time, he realized that the woman's body was too light and soft, and after making her sit down, Reiner hurriedly let go of his hand.

"I'm fine, just a little dizzy."

Teacher Claire had no time to care about whether Reiner had taken the opportunity to rub oil, and she was a little distracted, and at the same time realized that her initial harshness may be the rebellion from the bottom of her heart that she was unwilling to accept that the theory she was familiar with was overturned.

"Bring me my kettle......"

Hearing Teacher Claire's words, Xia Luo looked at the kettle placed on the table and hurriedly brought it over.

It was the kettle she had carried, and according to Reiner's memory, it was supposed to be some kind of special potion of her own concoction to cure Teacher Claire's old problems.

However, when he opened the lid, Reiner smelled a slightly familiar smell.

"Sweet?"

It was a strong, sweet smell, and Reiner couldn't help but wonder when she saw her pour the brown-black liquid from the kettle into the cup and gulp it down, and Claire regained some of her blood color slightly.

"Uh, Miss Claire, can I taste some of your medicine?"

As soon as Reiner's words came out, the atmosphere at the scene was a little awkward for a while.

Xia Luo didn't know what to say, and Teacher Claire, her cheeks climbed a few crimson.

"Are you making fun of me, Mr. Headmaster?"

She asked rhetorically, seemingly thinking that Reiner was taking advantage of the opportunity to tease herself.

"No, no, no, because I feel like your potion seems like I've seen it somewhere, so I want to confirm it, and I apologize if there's anything offensive."

Reiner hurriedly explained that he didn't want his hard-earned friendship to be wiped out in an instant.

Perhaps having never seen Reiner's humble attitude, Ms. Claire was a little embarrassed by her arbitrariness, and she poured a little potion into an empty water cup and pushed it in front of Reiner.

"Explain in advance, this is not to trust you, but you begged me to give it to you."

Hearing Teacher Claire's words, Reiner smiled helplessly, then picked up the water cup and tasted the potion inside.

Immediately, it was as if some kind of spark had been lit in Reiner's mind, and his eyes widened slightly, frozen in place.

Seeing him like this, Teacher Claire hurriedly put away her kettle and muttered to herself.

"He wanted to drink it himself, I didn't force him to ......"

"Headmaster?"

Charlotte shook her fingers in front of Reiner, and then she came back to his senses, staring at the brown-black liquid in the cup.

If Reiner's palate is correct, it should be some kind of special sugar water with a moderate sweetness and a good taste.

And the old problem of Mr. Claire, who needs to supplement sugar regularly, seems to be that low blood sugar has not run.

But none of that was the point, Reiner had something else in mind.

He got up, went to the side of the experimental table, and mixed the carbon dioxide they had just collected with the sugar water, and you could see that bubbles soon began to bubble out of the sugar water, like Coke on Earth.

"Can you freeze this for me?"

Reiner said to Mr. Claire, gesturing to the two glasses of liquid mixed with carbon dioxide.

Suspicious, but without saying anything, Teacher Claire immediately cast a spell to lower the temperature, causing a layer of hoarfrost to form on the surface of the cup.

Looking at this familiar object, Reiner felt a wave of nostalgia and took a sip of the soda.

There is no doubt that this is more than 80% similar to Coke on Earth.

Praise to chemistry.

Seeing the intoxicated expression on Reiner's face, Teacher Claire was a little strange, would her potion really taste good after adding that special gas?

Noticing Teacher Claire's eyes, Reiner handed her another glass.

"Do you want to try it?"

Teacher Claire was a little hesitant, on the one hand, this was her potion, and the strange gas had no taste, and the combination of the two would not have a special effect, on the other hand, the bubbling potion seemed to exude some kind of magic, which made her eager to try.

After thinking about it, Ms. Claire took the cup and took a small sip of the cold liquid.

“！！！”

An unprecedented feeling suddenly enveloped the teacher.

There seemed to be fireworks on the tip of her tongue, and the extremely stimulating sensation filled Ms. Claire's mouth, and for a moment, she even wanted to spit out the liquid in her mouth.

But the next moment, the fresh and sweet taste wrapped her throat, and the original fierce impact disappeared, turning into a cold wave, with an endless aftertaste, until she swallowed it all, and Teacher Claire still had a sense of trance.

Closing her eyes, Ms. Claire felt like she was in a pool of clear, cold water, and the feeling of satisfaction and comfort penetrated her body through her skin, making her feel that she was about to melt into the water.

She felt lightheaded, as if she could float up and fly into the sky at any moment, and for a moment, she even suspected that Reiner had given her some kind of psychedelic drug.

But this is clearly the smell of his own potion, but because the pungent gas and the impact of the freeze are too strong, Mr. Claire herself is lost in it.

Seeing Teacher Claire's expression, Reiner knew that this drink also had an unstoppable charm for people in this world, and he handed the cup that Teacher Claire had put down to Xia Luo, motioning for the student to taste it too.

Xia Luo took the cup and looked at the bubbles that kept coming out of it before taking a sip, and you could see that her eyes widened at the moment when the bubble-filled liquid poured into her mouth.

The carbonic acid is separated from the sugar water and turned into carbon dioxide, a process that absorbs a lot of heat and makes Xia Luo feel cool and refreshed.

The original ordinary sugar water, after this treatment, actually had a stimulating feeling, which made Xia Luo immediately feel refreshed.

Suffice it to say, she had never drunk such a drink.

For a moment, Charlotte seemed to be on the snowy fields of Brunhilde in the far north, and a bitter cold wind blew, dissipating all the heat of early summer, from her throat to her stomach, and then spread throughout her body, making her almost let out a small exclamation.

But Xia Luo still resisted the urge to drink it all, she looked at the bottle in her hand with some regret, and had to admit that this drink really had some kind of magical power, prompting her to take another sip.

"What the hell is this?"

Xia Luo couldn't help but ask.

"Teacher Claire's potion, as you can see."

Reiner glanced at Mr. Claire, who was still immersed in the dreamy taste of soda, and explained.

"It's just that I added this special gas and chilled it, so it tasted different, and there's a similar drink in my hometown that does the same, and if you want, you can call it Coke."

Crescent Academy is in the middle of nowhere, and Reiner hails from the drunken Metropolis, and no one will doubt that he's ever seen any strange food and ways to play.

Reading his memories and thinking of more things, Reiner moved on.

"I think this stuff can be used as a source of funding for the school."