At night, the Hogwarts Library was brightly lit.

Luo Xiu sat by the window and carefully flipped through a copy of "The Basic Essentials of Alchemy" on the table.

On the long table not far away, Hermione was writing hard, she glanced up at Luo Xiu from time to time, and then lowered her head to continue her study.

Half an hour ago, Hermione had made a decision - she was going to keep an eye on Rosho at all times and make sure she was studying longer than Rosho. If Luo Xiu studied by herself for three hours, then she would have to study by herself for three and a half hours, and if Luo Xiu read three books, she would have to read one more.

In short, she just has to be more diligent than Luo Xiu, and only in this way can she ensure that she is better than Luo Xiu in her studies.

The poor girl didn't know what the system was, and she mistook Luo Xiu as an ordinary opponent.

And just as she looked up at Luo Xiu for the fifteenth time, Hermione suddenly saw a familiar figure.

Professor Snape, the dean of Slytherin House, walked gracefully to the library and stopped to chat with Mrs. Pins.

"Why is he here......" Hermione quickly lowered her head, muttering timidly.

She had just been criticized by Snape in Potions class today, and she didn't want to meet him now.

Before Snape arrived, Hermione quickly sneaked into the corner.

Snape didn't notice Hermione, and after a few words with Mrs. Pince, he walked straight to Rosho.

Luo Xiu heard the footsteps, looked up and saw him, and hurriedly greeted with a smile: "Professor Snape." ”

Snape nodded, then sat down beside Roxiu.

Seeing the textbook on the table, Snape asked curiously, "Are you still studying alchemy?" Aren't you already proficient in this magic? ”

Luo Xiu said: "No, what I have mastered is only the skin, and the alchemy technique is only to turn a fixed substance into gold, or some precious metals, but I think since the alchemy can complete the conversion between substances, can the scope of this conversion be larger?" ”

Snape began to wonder, "For example? ”

"For example, can I turn wood into gold, or wood into something else?" Luo Xiudao.

Snape still didn't understand his intentions, and frowned: "But there is not much point in doing this, the reason why alchemy is valuable is because it can turn the stones that can be seen everywhere into expensive gold, it is creating value." ”

Luo Xiu said, "But Professor Snape, gold is not the only thing that has value in this world. There are many precious elements in the Muggle world, they are extremely scarce, even non-renewable, and if you can turn stone into these elements, wouldn't it be more valuable than turning it into gold? ”

Hearing this, Snape began to understand.

"So you're looking for the principles of alchemy, so you can improve it, or perfect it, right?"

Luo Xiu smiled and nodded, "Yes, exactly, Professor Snape. ”

Snape approvingly: "It's a very good idea. ”

Then he walked over to a row of bookshelves, fetched one of the thick ancient books, and said, "I can just recommend you a book called The Composition of Magic and Spells, which is about how magic and spells are created, and it will give you a better understanding of magic." When I was in my book, I tried to create my own spells, and it was inspired by this book. ”

Luo Xiu hurriedly took the book and read it carefully.

He was already familiar with Professor Snape's own spells, and "Shadowless" was quite a spell.

"So after reading this book, I can understand the principle of alchemy?" Luo Xiu asked.

Snape shook his head, "It may not be as easy as you think, but this book will help you a lot." If you are able to fully understand this book, then you will know more about magic. ”

"Know more about magic? What does that mean? Now it's Luo Xiu's turn to be puzzled.

Snape patiently explained: "For example, if you see a stone turned into gold now, then you can tell that the stone has been alchemized; If you see a person turned into a pig, then you can probably guess that he has been transfigured...... But based on your knowledge of alchemy and transfiguration, if an item undergoes something you've never seen before because they've been cast with a magic you've never heard of, are you helpless? ”

Luo Xiu spread his hands: "Then I will indeed be helpless." ”

At this time, Snape pointed to the "Composition of Magic and Spells" in front of Rosho, and said, "But if you study this book thoroughly, then you will not be helpless when you encounter such a situation, even if you have not been exposed to some kind of mysterious magic, but when you see it, you can roughly deduce how it works." ”

"Oh......" Luo Xiu suddenly realized, and then couldn't help but be amazed: "This is a very practical technique!" ”

Snape poured cold water on Rothew: "Don't be too happy, this technique is not an overnight effort, you need to study and practice hard." ”

"I will, Professor Snape, I will." Luo Xiu nodded seriously.

The two of them then discussed alchemy for a while, and Snape gave Rosho a brief overview of the life of the master alchemist, Nicol Lemay. The more in-depth the exchange, the more Luo Xiu found that Snape was a very knowledgeable person, and the two of them chatted very speculatively, until Mrs. Pince came to chase people and then left.

And Hermione, who was hiding in the corner, wanted to study for half an hour more than Luo Xiu, but Mrs. Pince had begun to get impatient, and she didn't dare to offend Mrs. Pince, so she had to obediently evacuate the library.

Just as she was leaving the library, Hermione overheard Snape and Rosho talking at the corner of the stairs.

"The Philosopher's Stone is a great invention, and even an apprentice magician who knows nothing about alchemy can turn it into gold, and Nicol Lemay is indeed a genius in this regard." It was Snape's voice.

"It is said that the Philosopher's Stone can not only turn stones into gold, but also create elixirs, I really want to see this treasure......" This was Luo Xiu's voice.

Then Luo Xiu asked again, "I heard that the Philosopher's Stone is at Hogwarts now?" ”

Snape hurriedly lowered his voice: "How did you know about this?" ”

At this time, Rosho said a name that made Hermione's soul fly: "Because Voldemort appeared at Hogwarts, and he must have come for the Philosopher's Stone." ”

Snape hurriedly whispered, "Don't discuss that person here, and don't fight the idea of the Philosopher's Stone!" Let's talk about this in another place......"

After saying this, the two of them went downstairs and left.