Castro looked at Avicenna's spreading hands for a while, and then looked helplessly at Lazi and John de Rupisissa in the house. When he realized that the result had become settled, his legs fell and fell to the ground, and cried.

Avicenna ignored Castro at all. He looked at the dazed alchemists outside the door and repeated: "Who is the next one?"

Castro was a very reputable mentor in the university, but he was expelled from the university by Avicenna in a few words. This made everyone in danger of the remaining alchemists. Avicenna's eyes turned to them. They just wanted to dodge, so how dare they come forward?

Seeing the alchemists' reaction, a meaningful smile appeared on Avicenna's face.

"I have heard that many alchemists would hide gold in charcoal, fake bottoms of crucibles, or inside metal vessels, and wait until the right time to take it out, pretending to have changed. To say something interesting, not long ago, a fraud occurred in Tuscany. An alchemist used this magic technique to gain the trust of a goldsmith and borrowed his field to prepare philosopher stones. But soon, the alchemist swept away all the goldsmith's property and disappeared."

The stories of alchemist scammers are not uncommon throughout the continent, and this is one of the reasons why many countries discriminate against alchemy. However, taking this story to the Alchemist University for public discussion is tantamount to pull the faces of all the tutors in the university.

President John De Rupisissa couldn't hold her seat and said, "There are probably more liars who pretend to be alchemists than the teachers and students in this university, but each teacher and student in this university is a real alchemist. No one in the school claims to be able to make philosopher stones."

"A clever statement draws the boundary between yourself and those liars. But aren't you studying the fraud books left by those liars? What Zosimos, Jabir Ibn Hayan are just liars who were born earlier. Look at those real ancient wise men, such as Aristotle, who mastered all the knowledge of that era, but did not contain alchemy. Isn't this telling the problem?"

Avicenna saw that the alchemists were so angry that they bit their teeth, then smiled again, and said:

"Don't look at me so maliciously. This is just my personal prejudice. If you want to prove that alchemy is not a scam, then you can come out and prove it boldly. Although I firmly oppose alchemy, the two committee members who came with me are still in a state of sway. As long as you can successfully convince one of them, plus Lazi and your principal, you will be the majority."

A strong man appeared among the alchemists: "Let's see how my latest achievements are?"

Avicenna squinted at him: "Are you?"

"George Stucky. Unlike Castro, I'm good at practical practice."

"Yes, go to your lab." Avicenna stood up with the heavy book in his arms, "I hope I can get some surprises this time."

George Stucky's alchemy laboratory is no different from most alchemy laboratories. The items in the laboratory are sorted out and look neat. Stucky walked into the laboratory and searched for a while, and finally took out a piece of white metal the size of a finger.

"Look at this, this is my highest achievement in my life."

Avicenna took the piece of white metal and looked at it carefully for a while. The piece of metal had a silver luster and looked exactly like silver.

"Don't tell me this is silver," Avicenna said. "You are an alchemist, not a silversmith."

"This is certainly not silver, but a great product of alchemy, a metal that does not exist in nature. I call it solid silver. Although it looks like silver, its nature is actually close to gold."

"I don't know much about metal." Avicenna turned to the two committee members who followed him. "You have been a committee member for longer than me. Try to see if what he said is the truth?"

The short and fat committee member nodded and stood up first: "The fastest way to test silver and gold is of course to use nitric acid. Silver will be corroded, but gold will not. Let me give it a try."

He walked around the alchemy laboratory and found the reagent labeled with a nitric acid. But just as he was about to throw the metal into it, Avicenna stopped him: "Don't use this directly, go to other laboratories to get a bottle."

"Avicenna, what do you mean?" Razzie shouted unbearably, "Are you doubting that this bottle of reagent is fake?"

Avicenna replied calmly: "Since it's a review, of course, you have to use a skeptical attitude. After all, it's not difficult to label the bottle, right?"

The short and fat committee member woke up from a dream, put down the bottle of reagents, and went to other laboratories to get a bottle. He threw the white metal into nitric acid and looked at it for a long time. "Guyin" still maintained its original shape and was not corroded by nitric acid.

The onlookers exclaimed. It was not that easy to withstand the corrosion of nitric acid. Among the seven major metals, only gold can do this.

"The corrosion resistance is really good." The tall and thin committee member stood up, "Let me try its melting point."

The melting point of gold is much higher than that of silver. The tall and thin committee member used tweezers to remove the piece of white metal, rinsed it clean, and put it into the crucible with a small piece of silver of about the size of it in a crucible for heating. He was not familiar with alchemy and could not control the temperature well. When the crucible was taken out, the temperature had far exceeded the melting point of silver. The silver naturally turned into silver water, while the white metal still maintained its original shape and had not changed.

The crowd burst into applause. The fat and thin committee members whispered in a voice that Avicenna could not hear, as if their attitude had changed.

"How?" George Staki looked at Avicenna provocatively.

"Your skills are really real," Avicenna's face looked softer. "I want to spend a lot of money on making such a piece of metal?"

"That's natural. The ore as big as a fist, after my refining, I can only use less than a little hair. Making this piece of solid silver, it cost me a lot of fifty-nomis horses just to make this piece of solid silver!"

George Stucky thought he had passed the review, but he had no reservations when answering Avicenna. Unexpectedly, as soon as these words were said, the attitudes of the two committee members changed suddenly. Avicenna showed a smile belonging to the winner:

"The experiment process is difficult, and it is inevitable to spend more budgets. I think the cost should be much less when actually producing it, right?"

"This..." George Staggie wiped his sweat and said hesitantly, "To produce this... the cost will probably be comparable to gold."

Avicenna interrupted him coldly: "But it is just silver, not gold. Although its nature is close, it is probably much weaker than the real gold."

Avicenna left George Staki and issued a declaration in front of all the alchemists:
Chapter completed!