When Hoffa returned to the school hall, all the students were asleep. None of the students from all four houses returned to the common room, they slept on the floor in their sleeping bags.

This scene is strikingly similar to the one Sirius invaded the school in the later generations, but it is even worse in nature than that one.

On the ceiling, a dark nebula swirled slowly, glowing with green lines like eyes.

The only source of light in the entire hall was the Hogwarts Orb in the center of the hall, which rotated slowly, its dense light as if squeezed by the darkness, dim and faint.

It does not serve any protective purpose at all.

Countless Auror teachers patrolled back and forth between the tower and the hall, even the wandering ghosts on guard.

But no one knew where that terrible creature had entered the school, and Hoffa couldn't figure it out.

There is a sentry outside the school that no train can enter, the entire Forbidden Forest is strictly guarded by the Aurors, and even the secret passages inside the school are sealed off by the school teachers, and this year the students are not even allowed to go to Hogsmeade.

How the hell did that guy get in?

Hoffa used the ghost to wander through a group of patrolling Aurors to his two friends, his steps so light that he didn't wake anyone.

But Aglaia was not asleep at the moment, her blue eyes flashed in the darkness, and when she saw Hoffa coming, she immediately sat up from the ground and wanted to speak.

"Shhhh ”

Hoffa looked at the sleeping people around him and motioned for her to be quiet.

"Did you ask about the results?"

In the darkness, Aglaia whispered in an exaggerated mouth.

Hoffa shook his head.

Aglaia was anxious: "How can this be, who is that, how will he know where I am hiding, if it is not Slytherin......"

"Shhhh ”

Hoffa shook his head and motioned for Aglaia to stop talking.

When she was quiet, Hoffa whispered in her ear.

"Is that the key, too?"

"What are you talking about?"

Aglaia rubbed her hair, her chest heaving violently, looking very excited.

"Your bracelet?"

"What the hell are you talking about? What key?"

Hoffa pondered for a moment.

"Nothing. ”

In the darkness, several Aurors walked by.

Hofa pulled Aglaia to lie down.

The Aurors walked slowly and patrolled, his eyes sweeping over a row of sleeping bags on the ground. The slender body slowly disappeared into the darkness.

When the footsteps died down, Hoffa looked sideways at Aglaia's blue eyes, who were also looking at herself in the dark.

"I'm a little scared, Hoffa. ”

She whispered.

In normal times, Hoffa would have taunted her, but now, he patted the back of her hand.

"It doesn't matter. ”

Then he let go and sat up, getting up and walking through the group of sleeping bags on the ground.

The ghost wanders into the dark halls.

......

......

The location of Osivia's office was known to Hoffa, and even if he didn't want to know, he was forced to know. Because his roommates had already known the teacher's daily whereabouts, they had to talk about the female teacher for a while every night.

Her office is located on the basement level, next to the Slytherin common room. Rumor had it that Dumbledore wanted to give her his sunny office on the third floor, but she refused. On the grounds of soil and water adaptation.

Hoffa looked at his watch, it was nearly one o'clock in the morning, and he wasn't sure if Ossivia would be in the office.

He stood outside the door and hesitated for a moment, but knocked on it anyway.

"Enter. ”

Almost as soon as he knocked on the door, a faint female voice came from inside.

The doorknob in his office creaked open, and Hoffa saw a spiral staircase leading to the ground, with the sound of water inside.

Hoffa walked slowly down, the longest spiral escalator he'd ever walked on, or down.

After walking more than ten meters of rotating stairs, the sound of gurgling water became louder in the darkness.

Her office was different from Slughorn's, a standard Slytherin office.

The office was dark and dreary. The interior is simply furnished.

The office has an all-glass wall, and outside the glass wall, there is a bottomless, black and oppressive black lake. In the lake, the faint moonlight is the only source of light in this underground office, and in the lake, there are some looming black shadows swimming in it.

Once his eyes were familiar with the darkness, he could see a huge statue of a snake head on the wall.

A fountain of water gushes out of the statue's mouth and then drips into the pool.

Ossivia Panxi sat at the head of the snake, seemingly merging with the black of the background, and Hoffa would have barely made out any trace of her presence had it not been for the faint green glow of her eyes.

This nest of water snakes made Hoffa instinctively uncomfortable.

"I've heard about your common room. ”

Ossivia said softly, "Horror heard. ”

Her voice was a little faint in the sound of the water spring.

Hoffa didn't speak, just looked up at her.

Osivia: "You came to me, do you think about it?"

Hoffa took a few steps sideways: "I can be your teaching assistant, not just a bystander, I have to find that person." ”

"That's not what I meant by looking for you. Ossivia said blandly.

"That's what I'm aiming for. "Not only that, but I have one condition. ”

"What?"

"I want to know everything, I need you to tell me everything about the Centaur King, and why he is in the Ravenclaw Tower. ”

"I'm sorry, I can't answer your question, I don't know the so-called Half-Human King, let alone his identity. ”

"Didn't you fight each other?"

"Yes, but I failed that time. I didn't get any information from that fight. But I'm sure he's not a wizard. ”

"And what can you tell me?"

Ossivia slipped silently off the snake carving and walked over to Hoffa, looking at his pale golden eyes with a close face.

"I can take you to the Forbidden Library, whatever that guy wants to do, the purpose is the Forbidden Library. As long as you find the library and lay a net there, no matter how powerful your opponent is, it will not be the opponent of hundreds or thousands of Aurors. ”

Hoffa was silent for a moment.

"What will you do after you kill him, will you get the knowledge in the library?"

"I don't care. Ossivia shook her head.

Hoffa: "Do you care about the ambitious people in England, what they do when they get an endless amount of bans, do you care?"

Ossivia shook his head: "I don't care, this world is inherently chaotic and crazy, with or without a library, those ambitious people will not disappear." ”

"That's right. ”

Hoffa sighed and held out his hand.

"Hopefully this time we can have the same goal. ”

Osivia's cold hand grasped Hoffa's palm, and when she let go of it, Hoffa felt an extra hard object in her palm.

He looked down and saw that it was a silver sign, snake-shaped, engraved with a row of small letters, Transfiguration Teaching Assistant.

"I'll be waiting for you at the library door tomorrow after school at six o'clock in the afternoon. Ossivia said.

"Which library?"

"Hogwarts Library. ”