"Five extra points for Gryffindor."

"Then, the magic notes we are studying today come from Andros' descendants, or possibly his nephews. They record Andros's views on magic, all in essays." Felix said gently, "Although I don't quite agree with some of the views in it... it's still good for broadening my mind."

Ron, who got extra points, sat down dizzy. Although the House Cup was cancelled this year because of the competition, it was an honor. Especially when he saw Slytherin's unconvinced expression, he felt happier.

Felix also got an unexpected gain. In this class, everyone was very active in answering questions. He gave extra points to students as if they were free.

"Ms. Greengrass, your answer is very accurate. Five points for Slytherin."

"Mr. Finnigan, although you raised your hand very quickly, your answer is not comprehensive. Only two points. Let me explain in detail. Strong power is not the same as strong explosion power. We can discuss this issue at another time. I happen to know some useful techniques."

"Crabbe... your answer is full of imagination. Please take a seat."

...

When the class was over, Hermione stayed.

"Do you want me to recommend some books on analyzing alchemical items?" Felix asked.

"Yes, Professor," Hermione said. Harry and Ron looked at him eagerly from behind. She said calmly, "We need to crack the secret of the golden egg. In addition to trying our luck, we currently have two ideas. One is to use various spells to crack it, such as the Apparition Spell, the Revealing Spell, or the Apparition Eraser... We plan to try them one by one! The second idea is to start from the perspective of alchemy," she shrugged, "After all, this is also a magical item. If we can analyze its production method, no matter what secrets are hidden in it, we can find it."

She looked at Felix as if asking for his opinion, "Professor, we think this is a test for warriors, right?"

Felix did not comment. "I haven't touched the golden egg either, so I can't give an accurate answer. However, the idea is fine. If it were me, I would think the same way."

Hermione's expression seemed to be greatly encouraged, and she looked at Harry and Ron proudly.

Harry thought that trying his luck was not a bad method. Although his luck was sometimes bad and he sometimes got into dangerous trouble, he was still alive and well so far... This was already very telling.

Felix wrote a list of books and signed his name. "Some of the books here are Mr. Nick Flamel's collection and research results. I picked out some books that I thought were suitable and put them in the library. Some introductory books are placed in the alchemy area, and some books related to the manufacture of alchemical items are placed in the forbidden books area."

He handed the signed list of books to Hermione and walked out of the classroom with them.

"It just so happens that I am going to the library too, so I will do you a favor. Some books are hidden very secretly, and Madam Pince may not be able to find them..."

Hermione asked with great interest: "Professor, are you going to study any new fields?"

"Oh, I guess so," Felix muttered, "If the Armor Charm can be considered a new field."

There was some noise outside the library, and a group of people blocked the door. Two senior witches tiptoed excitedly to look inside. Hermione said impatiently: "Can't he take the books back to the ship to read?"

Felix saw Krum's figure and understood in his heart that these people outside should all be his admirers.

Ron's expression was a little strange. He used to admire Krum very much, but after becoming a warrior, he unconsciously regarded him as a rival. At this time, one hand was on his schoolbag, not knowing whether to take out the parchment to ask for an autograph.

But when he saw several girls at the door turning their heads to look at them carefully and whispering to each other, he put his hand down and straightened his chest as if he was welcoming an inspection. After all, he was also one of the warriors. It was really embarrassing to ask another warrior for an autograph.

"What are you thinking about?" Harry bumped his shoulder.

Ron realized that Professor Happ and Hermione had already gone in. Harry looked Ron up and down, suppressed his laughter and said, "You are not expecting someone to ask you for an autograph, are you?"

"Oh, how could that be?" Ron said loudly, his face suddenly flushed.

At this time, he saw Moody coming out with a pile of books in his hands. When he passed by them, Moody stopped and stared at them with both eyes at the same time.

"You performed well, especially the tunnel digging trick, it was a stroke of genius! Yes, it suits you very well."

The two watched Professor Moody limp away, and Ron said in disbelief: "Suitable? Does he think we are groundhogs? There is no other way..."

Harry shook his head, "Maybe he thinks that at our age, avoiding direct confrontation with dragons is the right choice."

They walked into the library and found Hermione sitting at the table with a pile of books, waving at them. Next to her was Professor Happ, who also had a pile of books in front of him, which was only higher than the pile next to Hermione.

Harry and Ron sat in the empty seats, staring at the books in front of Hermione in a daze.

"Analysis of Conventional Alchemical Items", "Common Alchemical Techniques", "Nick Flamel Manuscript 1", "Nine Alchemical Schools", "Controversy over the Fifth Element", "Hide Your Secrets", "Unreliable Alchemy"..."

Ron ran his fingers along the spines of the books and read the names on them.

"You can read the most basic book first. I recommend "Unreliable Alchemy", written by an alchemist in the 17th century." Felix turned a page and said without looking up.

As he spoke, a large book flew out of the big book in front of Harry and the others and landed in front of them with a "bang". "The book introduces the basic concepts of alchemy and refutes some wrong views from the Muggle world..."

He hesitated for a moment, but couldn't help but introduce a few more words.

"If the author of this book had dug deeper, or if there were later people who inherited his ideas, he might have discovered a field as wonderful as alchemy. But the idea of ​​magic limited him, and in his time, ordinary people confused chemistry with alchemy, and the trend of alchemy was prevalent. Many mistakes were so obvious..."

He paused, "So you will find that the author of this book is contemptuous of 'alchemy' in the secular sense."

"After that, because of the Statute of Secrecy, no alchemist paid attention to those ridiculous conclusions of the non-magical world. And the fact is: they, I mean the Muggles, already have their own alchemy, but they just changed the name to chemistry."