Wen Chengzhi stared at the Ouroboros coin that landed under the podium, it looked so ordinary, but in the eyes of different people, it represented a completely different meaning.

The student sitting in front of the podium was hesitating whether he should pick up the coin or not, after all, this matter actually had nothing to do with him, and if he rashly participated in it, if he was sarcastically ridiculed by Yan Song, who looked very bad, it would be quite embarrassing at that time.

Therefore, most of the students chose to give up after thinking about it for a while.

Da-da-da-da.

The gentle professor stepped down from the podium, stood in front of the Ouroboros, glanced at the student who had just expressed his opinion, and then bent down to pick up the Ouroboros.

However, before he could pick it up, his other hand had already grabbed the coin.

It is Chai Tang played by Qian Jiangyue.

"Teacher." Qian Jiangyue straightened her back, "I didn't expect this thing to be so common." He shook the coin he had just picked up, "Same as mine." With that, Qian Jiangyue took out the coin that belonged to her from her pocket with her other hand.

"Huh?" Wen Chengzhi had a smile in the corner of his eyes, "I really didn't expect to see three coins belonging to the ancient country of Gubol at one time without prior arrangement, which is really very surprising to me." ”

Although it was said that this was the case, Qian Cangyi, Qian Jiangyue and Hawkeye did not find any surprise in Wen Chengzhi's tone and demeanor.

Qian Cangyi restrained himself from frowning, after all, Yan Zhou, who he played, didn't like to do this action.

"It's just a coincidence, but I'm actually surprised." Qian Jiangyue smiled back, "Give it back to him, whether this thing is real or not, it's always wrong to throw it around." ”

"Okay." Wen Chengzhi nodded, "Then I'll trouble you." With that, he walked back to the podium.

Qian Jiangyue took three steps and two steps to Hawkeye, "I can understand your thoughts, but whether or not Coupal really exists, it doesn't exist now, does it?" There's no need to be so angry. Speaking of this, Qian Jiangyue returned the Coupal coin to Hawkeye and blinked at the same time.

Hawkeye understood, of course, but he didn't say much.

But at this time, Qian Jiangyue found that there was a strange and unfamiliar feeling behind him, and even though the Ouroboros coin had not been completely handed over to Hawkeye, he still chose to turn back.

Looking around the classroom, nothing strange happens.

So, Qian Jiangyue set his eyes on Qian Cangyi, and he found that Qian Cangyi was also looking at him at this time, but his eyes kept glancing at the direction of the podium.

It's him?

Qian Jiangyue raised her head and set her eyes on Wen Chengzhi, the gentle professor still maintained an elegant posture, no different from when he first appeared.

Without asking much or saying more, Qian Jiangyue returned to her seat.

"Okay, let's get started, just ...... By the way, your name is this classmate? Wen Chengzhi looked at Qian Jiangyue.

"Chai Tang." Qian Jiangyue nodded as she spoke.

"The views of Chai Tang, Yan Song and Yan Zhou just now represent the three mainstream views, but our lecture is not to argue about the existence of the ancient kingdom of Guboer, but to tell about alchemy itself, you can listen to it as a story, as for the truth or falsehood, the current science and technology have proved it, and there is no need to argue." Wen Chengzhi coughed twice after speaking.

"Alchemy, simply understood, is to turn base metals into precious metals, if it is called alchemy, then it is to transform ordinary medicinal materials into elixirs that prolong life. No matter how you understand it, alchemy itself contains a certain expectation of human beings, and it is precisely because it can bring wealth and power in a very 'simple' way that it is so favored by modern people. It's just that there are many things that can be done in science now, and the only difference seems to be that everyone is not very willing to learn more knowledge related to their major......" Wen Chengzhi laughed when he said this.

The students in the seats laughed as well.

"In the 4th century B.C., with alchemy as the center, a set of natural science and philosophy system was established, which is known as the theory of elements, the world is composed of the four elements of air, water, earth and fire.

This kind of thinking provides a theoretical basis for the material transformation of alchemy, and some students may be curious, since the elementalism provides a theoretical basis for alchemy, then I say that the elementalism is established centered on alchemy? The reason is simple, we have a little problem with our understanding of alchemy, specifically with the definition of alchemy. ”

"The turning stones into gold and refining the elixir mentioned before belong to the technical part of alchemy, just like when we talk about modern civilization, the first thing that comes to everyone's mind is air conditioning and firearms. In fact, these are only a part of modern civilization, more precisely a very small part. ”

"It would be an exaggeration to say that alchemy is some kind of tutorial that can make people become gods, as if the people who study alchemy are hunchbacked old men hiding in the basement to do secret research." Wen Chengzhi shook his head.

"So, what exactly is alchemy? It is the way people in ancient times understood the world, it includes both theory and practice, just like we talk about the scientific method every day, for ancient people, alchemy, a way of understanding the world, will also be often talked about by ancient people. ”

"With all that said, it's time to get down to business. What is Coupal's alchemy? ”

"In the deciphered Coupal text, there is a frequent data, that is, 1:0.471, I don't know if you know this content. In what we usually think of as alchemy, the conversion of matter is usually considered to be less than 1 transformation, which means that 1 gram of iron must be less than 1 gram of gold refined through alchemy. ”

"Some people believe that this data represents the transformation limit of Coupal's alchemy theory, that is, 1 gram of iron can only produce a maximum of 0.471 grams of gold after alchemical transformation." Wen Chengzhi said this and glanced at Eagle Eye.

"Corresponding to the theory of elements, the ancient kingdom of Gubol also has a similar classification, compared to air, water, earth and fire, the classification of the ancient country of Gubol is much more peculiar, they are matter, soul, time and space, and energy, in their eyes, these four things are everything that makes up the world, in addition, if you want to start alchemy, you must meet these four conditions at the same time."

Wen Chengzhi stopped at this point, as if waiting for the student to ask a question, but there was no intention for the student to ask.

"As for the process of initiating alchemy, it is actually similar to the alchemical theory of the first century in the park, with three parts, namely, understanding, deconstruction, and reconstructing ......"

……

Ding Ding Ding.

"By the way, have you ever wondered why you think that Coupal has alchemy? In fact, because the 2% of the text deciphered is about alchemy, it is not surprising that there is this conjecture. Suppose our civilization suddenly collapses, and a book that is not suitable for children is accidentally saved to the post-disaster world. ”

"At that time, I am afraid that the people of the future generations will have some strange thoughts. Well, after class, if you are interested, you can find out on the Internet yourself. ”

Wen Chengzhi stood up and left the podium, but did not leave the classroom, but walked in front of Qian Cangyi.

"Can I talk to you?" Wen Chengzhi said to Qian Cangyi and Qian Jiangyue.

"Absolutely." Qian Cang looked panicked and happy.

"Okay, I have some questions for you, teacher." Qian Jiangyue nodded.

Wen Chengzhi nodded, and then shouted loudly: "Classmate Yan Song, can you come over for a while?" ”

Hawkeye, who had already walked to the door, stopped when he heard this shout.