At the end of the hallway was a tightly locked door, the style of the door was a little quaint and dull, and when he walked to the closed door, a trace of desperation appeared on Neville's face, pale from the vigorous exercise, "What to do." Can't get in. He looked at Augustus habitually, as if he had forgotten that he was also a wizard.

"Oh, come here." Hermione said roughly. She snatched Neville's wand, knocked on the lock, and whispered, "Alajo Cave open!"

The lock clicked, and the door suddenly opened—and they rushed in and slammed it shut. Harry leaned against the cold door and gasped, he was really unlucky today, first losing the duel with Malfoy, and then meeting Filch, the administrator who specializes in students, I wonder if the road can continue to be unlucky. Harry whispered, "I don't think we'll be okay - go away, Neville!" Neville kept tugging at the sleeves of Harry's robes. "What's wrong?"

Harry turned—he saw it, he saw it clearly. For a moment, he believed he must have walked into a nightmare – after so much had already happened, it was simply too much.

They weren't in the same room as he thought they were. They were in a hallway. It's the no-go corridor on the fourth floor. Now they know that there is something forbidden to enter here.

They were facing the eyes of a large, monstrous dog that was so big that it filled all the space from the ceiling to the floor. It had three heads, three pairs of vicious eyes that were dripping and turning, three noses—twitching and trembling in their direction—and three drooling mouths that hung from the yellowed dog's teeth like slimy rope.

It stood motionless, all six eyes staring at them. Harry knew that the only reason they weren't dead was because they had taken it by surprise by their sudden appearance. But it was quickly coming back to its senses, and it was all too clear what that deafening roar meant.

Unlike everyone's frightened expressions, Augustus was looking at the three-headed dog with amusement at the moment, the subspecies of hell, the watchdog of the demons, as a weaker existence in the abyss of hell

, I didn't expect to meet one in Hogwarts here.

Harry's hand had already reached the doorknob, and Augustus quietly threw a confusion spell at the Cerberus, and although he didn't know what the Cerberus was protecting, it was clear that he wouldn't delve too far into the secrets. The crowd didn't notice Augustus casting the spell, but after noticing the dog's suddenly tilted head and confused eyes, they all reflected, and Harry opened the door first, and before he knew what was wrong, everyone quickly rushed out of the door.

Back in the hallway, the crowd scattered, and Filch must have been busy looking for them elsewhere, and they saw no sign of him. A thrilling night for each of them slowly condensed in their respective memories.

Halloween arrived, and the auditorium was littered with colorful decorations, a thousand bats fluttering over the walls and ceiling, and a thousand more like low clouds hovering above the table, causing the candles in the pumpkin's belly to flicker. The delicacies suddenly appeared on the golden plate, just like at the opening banquet.

Augustus was slowly eating his meal, preparing for his first Halloween at Hogwarts, and Malfoy was clearly accustomed to eating the same way Crabbe and Goyle ate casually, eating mashed potatoes while watching the pumpkin flames in the Great Hall.

Professor Quirrell burst into the dining room suddenly, his large scarf slanted over his head and a look of horror on his face. Everyone stared at him, only to see him walk up to Professor Dumbledore's chair, lean back on the table, gasp and say, "The troll—in the basement classroom—thought you should know the truth." ”

With that, he fell headlong to the floor and passed out.

There was chaos in the restaurant. Dumbledore calmly used his wand to shoot several screeching fireworks explosions into the sky, and when everyone had quieted down, he began to ask the prefect to lead the students back to their dormitories.

Augustus was about to adjust the new door to return to the dormitory when Harry and Ron suddenly rushed over. "Hermione, Hermione! On the third floor, she still doesn't know about the trolls, and it is likely that she will be in danger! Harry gasped and said to Augustus.

"Who's going to care about that mudblood." Malfoy gloated.

"Shut up, Draco. Harry, I'll go with you for a while, Hermione's direction is very close to the basement where the troll is, and there is a real possibility of encountering a troll. Lillian, I'll leave it to you" Augustus frowned, decisively agreed to Harry, and then explained to a beautiful blue-haired girl next to him, and walked towards the third floor with Harry Ron.

The three of them mingled in the Hufflepuff crowd and walked in the other direction. They slipped quietly through the empty side hallway and hurried to the women's restroom. As soon as he turned the corner, Harry sniffed, and a foul odor crept into his nostrils, the smell of a smelly sock mixed with a public toilet that was never cleaned. Then they heard a low grunt and the sound of huge soles dragging on the ground. Ron notices that at the end of a passage on the left, a behemoth is moving towards them. They quickly retreated into the darkness and watched as it slowly walked into a patch of moonlight.

It was a horrible sight. It was twelve feet tall, its skin dull and gray as granite, and its massive, dumb body resembled a huge pile of mud with a small head like a cocoa bean. Its short legs are as thick as tree stumps, and underneath are flat, thick, calloused feet. The smell emanating from it was disgusting. It holds a thick wooden stick in its hand, which is dragged on the ground due to its long arms.

The species of this world is really a bit peculiar, Augustus looked at the honest troll and let out a laugh, the troll scratched his head, looked around, and found that there was no one, so he stopped by a door and peeked inside. It wiggled its long ears, made a decision with its small head, and then lowered its head and slowly slipped into the room.

Harry quickly stepped up and leaped, grabbed the key in his hand, slammed the door into it, and locked it securely.

"It's done!" Looking at the door that had been shut down by Success, Harry gave Augustus a smug smile. Just as the three of them were about to return, a terrible, frightened voice came from the room.

"Oh, oops." Ron said, his face pale as the ghost of Baro the Bloody.

"That's the women's restroom!" Harry couldn't even breathe.

"Stop talking nonsense." Augustus drew his wand and blasted the door open, and the trio rushed in, Hermione Granger cowering by the opposite wall, seemingly ready to faint at any moment. The troll was closing in on her, smashing the pool off the wall as it walked.

Harry and Ron both looked at Augustus at a loss, Augustus calmly looked at the troll less than three meters away from Hermione, a green ball of light was generated at the front of the wand, and flew towards the troll, some parts of the troll's body hit by the ball of light were instantly corroded, a zero-level spell acid splash, it couldn't be better to attract hatred, the troll let out a huge wail, turned around, looked at Augustus, and his little eyes shone with hatred, dragging the wooden stick and running towards Augustus.

The floor of the women's toilet made a loud vibration sound, and the wind pressure brought by the huge body of the troll made Harry and Ron can't help but squint their eyes, and the next moment, their slightly narrowed eyes saw an incredible scene, dozens of red high-temperature pillars of light were generated around Augustus, with a speed that could not be seen by the naked eye, the troll was instantly penetrated through the body of the troll, the troll was passed through countless red pillars of light, and the body rose high into the air, and the flesh fell apart under the illumination of the pillar of light, less than a moment, Only a pile of minced meat fell to the ground, some large pieces could barely be seen that the body of the troll was constructed, and the entire women's toilet was also full of devastation, countless stones fell and shattered under the touch of the red pillar of light just now, almost half of the room was destroyed, Harry and Ron opened their mouths in a daze, Hermione also stopped sobbing, for a while, the atmosphere in the room was a little strangely quiet.