The night is as cold as water, and the moonlight is slightly cold.

In the empty silence of the street, Dumbledore and his party stood in the door of a dilapidated house.

"It just occurred to me that there might be someone better suited than Professor Slughorn." Just as Dumbledore was about to push open the door, Lu Li suddenly said.

"Do you know any other wizards?" Harry asked, surprised, half-convinced.

"Actually, they don't know each other, but they will definitely spare no effort to protect Hogwarts School of Witchcraft and Wizardry." Lu Li's tone was a little mysterious, and he didn't directly say the names of those wizards.

"Alright, we're all here. If Slughorn and I can't create what you call a Horcrux locating charm, I'll consider your suggestion. ”

Although he still doesn't know the root of Lu Li, from the contact and understanding during this time, it is just like Harry is puzzled.

This young man had never been exposed to magic before he knew them, so where could he go to find a powerful wizard who knew the dark arts so well?

Truth be told, Dumbledore didn't quite believe what he said sometimes.

As he spoke, Dumbledore uttered the incantation "Fluorescent Flicker", then pushed open the door and walked inside.

It didn't take much time for the old headmaster, who was extremely accomplished in transfiguration, to see through the old friend who had changed into a sofa at a glance.

Horace Slughorn was once the head of Slytherin, but now he was just a bald old man as fat as a walrus, with bulging eyes and a silver beard as thick as a walrus.

Slughorn loves to associate with celebrities, successful people, and important people, and enjoys being able to influence them.

He was particularly fond of creature comforts, and his favorite was oak-aged mead, pineapple compote and velvet smoking shirts.

In short, Horace Slughorn is a pleasure and vain person, but he is not a bad person at heart, he just likes to teach and nurture students who are gifted.

This is the information that Dumbledore told Harry and Lu Li on the way here.

I have to say that Dumbledore is completely worthy of the words "cunning".

Harry's mother, Lily Evans, was one of Slughorn's protégés.

Harry was brought here to play the emotional card, and secondly, because Dumbledore knew his hobbies, and Harry was also a good remedy.

After that, Lu Li showed off his unusual strength a little at Dumbledore's signal.

After hearing Dumbledore's proposal, Slughorn, who was already guilty, was quickly moved.

Of course, a large part of this was due to Harry's assist, as the old headmaster invited him back to teach Potions again with the position of Potions teacher vacant.

Poor Professor Snape, who had not been in office for half a year this semester, was inexplicably ill and unable to continue teaching.

Well, he was actually sent by Dumbledore to work undercover on Voldemort's side.

......

Life at Hogwarts is a bit boring and boring after getting used to it.

There aren't many fun activities other than Quidditch.

This is especially true for Lu Li, a person who has no longer taken any magic classes.

The Death Eaters out there were still hidden, and Voldemort had never actually appeared, so the wizarding world was a little too boring.

For him, it's much more fun to have a magical duel with Sirius, or to go to the Forbidden Forest in search of magical creatures, or to teach a few wizards who don't open their eyes in Tumbledown Alley.

However, I heard that Dumbledore, with the cooperation of Slughorn, had a big breakthrough in the Horcrux Positioning Charm.

It is said that it was inspired by Harry's map of the living spots.

There is a room for requirement.

Lu Li sat in the corner, still looking at a magic book.

"Why didn't you wear the glasses I gave you?" Luna asked in a whisper as she approached.

She had now been able to summon her Patronus, a nimble hare.

"Thank you very much for the gift, but I don't have any problems with my eyes." Lu Li raised his head slightly and said with a smile.

"Is there something wrong with your eyes?" Hermione asked curiously, as if she had discovered a new world.

She is also one of the few witches in D.A. who can summon a Patronus.

"It's just a little different." Lu Li replied very perfunctorily, and his eyes fell on the magic book in his hand again.

Obviously, this smart lady of all trades does not have the heart of a "crazy girl" in some respects.

"I really didn't expect you to be interested in this kind of magic book." Hermione narrowed her eyes, a look of surprise on her face.

She glanced at the magic book in Lu Li's hand, which was a very common "Family Spell Encyclopedia".

This book can be said to be a big deal that can be seen in any bookstore in the wizarding world.

"I've always been interested in practical knowledge." Lu Li replied without raising his head.

Under Harry's guidance, the D.A. Force is on the right track, and the members have learned a lot about how to defend themselves against the dark arts.

"Listen to Harry, you got a bottle of Elixir from Professor Dumbledore?" During the break, Ron and Harry also leaned over and asked directly.

"Yes." Seeing that more and more people had gathered, Lu Li closed the magic book, nodded and said.

"That thing has always been priceless, I didn't expect Professor Dumbledore to have such a good thing." There was a hint of excitement in Ron's tone.

"Harry, how about that book I recommend you?" Lu Li's gaze looked at Harry and asked with a hint of mystery.

"Great, I've been praised many times by Professor Slughorn." Harry smiled happily, a hint of confusion on his face, and then asked:

"By the way, I've always wanted to ask you, who is the half-blood prince in this book?"

"Severus Snape, is it a surprise?"

After Lu Li said the answer, his eyes swept over the faces of several people around him, and he couldn't help but smile when he saw that they were all surprised.

"No one or thing should be judged from the surface, but from the ...... of things"

Boom! Boom! Boom!

Before Lu Li's words were finished, a loud noise sounded outside the room.

It was as if a dull thunderclap reverberated in the cloud-shrouded sky.

The eyes of the members of the D.A. involuntarily looked at the source of the sound, which was coming from the solid walls.

"It seems that Umbridge finally can't take it anymore."

Lu Li looked at the slight cracks like spider webs on the wall, smiled slightly, and whispered to the few people present.