Later that day -

"You mean Harry's broom hit the Whomping Willow?"

Felix said in surprise, Hermione said sadly, "When we went to look for it, we only found some debris."

"Harry must be very sad," Felix sighed, he took out a note, wrote a few lines of blessing sentences, and then stopped to ask Hermione's opinion: "Do you think we should add some magical effects to the greeting card, such as sound?" "

It's better not," Hermione said firmly, "Ginny will give Harry a get-well card. If you don't put it under the pillow, it will sing shrilly..."

Felix shrugged, "That's it," he handed the card to Hermione, "Please give it to Harry for me."

In the next few days, the little wizards discussed what happened on Saturday with great interest, especially Professor Hep's Swift Patronus with full visual effects, which was talked about with relish.

The name of the Patronus Charm quickly spread throughout the school and became the center of recent topics. Any student who was pulled over could talk about it very well - even if there were many fallacies in their words.

Some junior wizards got all kinds of true and false information from senior students, combined with their own understanding, and spread it again.

Many people actually couldn't tell the principle of "half full moon". They regarded it as the second form of this magic and named it "Silver Moon".

Felix heard this name one morning when he was having breakfast in the auditorium. At that time, he almost spit out the porridge in his mouth.

Cormac McLaggen, a fourth-year student, boasted: "My uncle's patronus has a second form. I will never lie!" He touched his coarse hair and talked loudly: "My father said that my uncle's patronus is a wild boar, but I saw it once when I was a child. It was obviously a long-eared rabbit. I was surprised... It turns out that this magic has two forms."

Felix looked at McLaggen carefully. If his words were not adulterated, his uncle must have had a tragic experience and his whole personality changed drastically-only in this case would the patronus change.

Some people kept asking where they could learn this spell. "What a cool magic!" Lee Jordan shouted in the common room, "I mean, even if I can't do it like Professor Hep, at least I can protect myself."

But Flitwick poured cold water on them. He stood on a pile of big books and emphasized more than once: "The Patronus Charm is not within the scope of our exam. It is too advanced and many adult wizards cannot master it. This magic requires strong mental strength..."

Flitwick did not intend to teach it. Some young wizards turned their attention to the Defense Against the Dark Arts and Dueling classes. They were lucky by accident - according to the functional division of the courses, these two courses teach students how to protect themselves.

On the second Thursday night in November, Felix was asked this question in the Dueling class.

"Patronus?" Felix repeated.

"Yes, Professor Hep. This is the spell we need most right now, isn't it? Dementors are lurking outside the school, ready to attack us at any time!" A fifth-year Gryffindor shouted loudly, and his words attracted the nods of the young wizards below the stage.

Felix laughed: "Lee Jordan, the Dementors are guarding Hogwarts under the orders of the Ministry of Magic. Their target is the fugitive from Azkaban, Sirius Black."

"But Professor, what happened on the day of the Quidditch match has proved that they are unreliable. I wrote to my family, and my mother replied that releasing the Dementors from Azkaban was the stupidest decision made by the Ministry of Magic!"

"Yes, they are not controllable at all."

"My aunt told me that even in Azkaban, Dementors had rioted... and some prisoners died." Susan Bones of Hufflepuff said. She saw Professor Hepp's eyes and added: "My aunt is the director of the Law Enforcement Department." Felix hesitated. To be

honest, he didn't think it was a good choice to teach the little wizards the Patronus Charm in the dueling class - it takes a long time to learn, it is difficult, and the most important thing is: it may not be effective.

For such a profound spell, it is difficult for students to master it without one-on-one guidance. But if he really wants to teach by hand, even if he has ten time-turners, he still can't do it.

He looked at Professors Snape and Flitwick, "What do you think, Severus, Filius?"

Snape immediately showed a resistance expression, and he said coldly: "I don't know this spell."

Flitwick also expressed his opinion again: "Felix, the Patronus Charm is very complicated, and its function is too single. I don't think it can be used. Besides - Dumbledore has protested to the Ministry of Magic, and Fudge promised that the Dementors will never make the same mistake again."

Felix nodded, he also knew about this. In fact, when a group of shrunken Dementors went back, there were many opinions within the Ministry of Magic. Some people wanted to send people to investigate, but Dumbledore firmly pushed them back.

In addition, some irritable parents of students kept sending yelling letters to the Ministry of Magic and even Fudge himself, which made them anxious, and no one mentioned the Dementors' injuries anymore.

Felix put the matter aside for the time being, but... he looked at Snape. The professor said that he didn't know the Patronus Charm. Is this true?

Could it be that the professor was too deep into the field of dark magic to be able to use the Patronus Charm?

...

At dinner, he and Snape sat together and discussed the details of the next duel class. Felix commented: "The students have already mastered several common duel steps. It is best to arrange practice in the next few classes. Severus, I have an idea. Maybe we can hold a small duel competition."

"Aren't you afraid of trouble, Felix?" Snape said.

"I plan to let the student union do it. Percy Weasley and Penelope Clearwater are both very capable. I trust them." Felix said.

Snape showed his usual sarcastic expression: "How much sincerity is included in your trust? Felix, has anyone really entered your heart?" Felix

laughed, "Oh, Severus, do you want to say that I am hypocritical? We are discussing ability. In this regard, I really trust Mr. Weasley and Miss Clearwater very much. What do you mean?"

Snape stared at him expressionlessly, and Felix deliberately showed a fake smile.

At this moment, a voice interrupted the silent communication between the two——

"Professor Snape, I just met Professor Flitwick, he said you were in the hall." Lupin walked up to the two and said happily. He changed into a new robe, and it seemed that Dumbledore paid enough salary for his daily expenses.

"What's the matter, Lupin?" Snape's eyes narrowed: "Have you finished the potion I gave you? I still have some here, a full pot..."

Lupin smiled and said: "Not for now, Severus. I came here for another thing--"

Snape looked at him, without a smile on his face.

Lupin said, "I'm very grateful that you helped me fill in during my illness, but the teaching in the third grade is too radical. It directly spans most of the textbook--"

"Werewolf..." Snape dragged out the sound, and Lupin's hand trembled a little, but he concealed it well, "...Any questions about this chapter?"

Lupin frowned slightly, "Severus, the third grade has just learned Hinckley Punk, and most students do not have the corresponding foundation. I'm sorry, I decided to postpone the content of this part." Snape glanced

at him contemptuously, "If you ask me, Lupin, werewolves are too dangerous. It is very necessary to let students know how to identify and kill werewolves as early as possible." He said softly, "Maybe it will be used someday."

Lupin regained his calm: "Thank you for the reminder. I will teach according to the ability of the little wizard. If there is nothing else, I will leave first. There is still a lot to do."

"Wait, Lupin."

"Anything else, Snape?" Lupin said in a deep voice.

"Let me introduce you," Snape's eyes moved between Lupin and Felix, "From what I know, Professor Lupin's Patronus Charm is extremely advanced. Perhaps - Felix, you can invite him to be the temporary professor of the duel class."

Snape's eyes flickered, "As the professor of the Defense Against the Dark Arts class, it is certainly your responsibility to show students how to deal with dangerous dark creatures like Dementors."