The time came to October, and after training every Wednesday in September, Loki, Lillian, and Malfoy all formed their own magic strings one after another, and at the same time mastered three or four first-level magic of their respective attributes. The temperature at Hogwarts Castle plummeted, and a wet chill permeated the grounds, seeping into the castle. A sudden flu broke out among the staff and students, leaving Madam Pomfrey the head nurse scrambling. Her pick-me-up had an immediate effect, but those who drank it would smoke in their ears for hours on end.

The rain of bullets crackled on the windows of the castle and did not stop for several days. The lake was rising, the flower beds were filled with mud, and the pumpkins that Hagrid had planted were swollen to the size of a trellis.

In the Hogwarts Library, Augustus sat on a soft chair and read the "Encyclopedia of Dragon Spells", which is very interesting in this world. By borrowing from the way of chanting mantras in dragon language, you can depict the rhythm and frustration of the voice of the magic system.

It was still pouring rain outside the window, and it was already as dark as ink, but inside the house was bright and cheerful. The firelight reflected the countless soft armchairs in which people sat reading, chatting, and doing homework. Fred and George Weasley, twin brothers, are studying what would happen if they were given some strained fireworks to a salamander. Fred "rescued" the bright orange-red lizard from the Conservation of Magical Creatures class, and at this moment, it was lying on a table with a smothering burn, surrounded by a group of curious people.

Suddenly, the salamander over there swooped into the air, spinning wildly around the room, crackling and releasing sparks, accompanied by some loud bangs. Percy hissed and reprimanded Fred and George harshly. The salamander's mouth spews orange-red stars, which is very beautiful and spectacular. With a series of explosions, it fled into the fire.

Augustus shook his head, smiled, and continued to look at the scroll in his hand.

"Mr. Augustus, you're in the library too?" A voice came from behind, Augustus looked up, and Harry stood in mud and looked at him a little embarrassed.

"How did you get this out of your way and not get a change of clothes?" A trace of doubt flashed in Augustus's eyes, whether this costume was specially for Halloween at night.

"I had just returned from Quidditch training and was caught by Filch before I could go back to change my clothes, and when I finally came out, I was stopped by Nick, who was almost headless, and invited me to his death party. So I haven't had time to change my clothes. Harry pushed his glasses and explained briefly.

"Death party? Is it a party full of ghosts? It just so happens that I'm also a little interested, so why don't I join you. The ghost party must have been interesting to think about. Augustus suddenly spoke to Harry on a whim.

"Meet in the Great Hall at seven o'clock that afternoon, and I'll go find Ron and Hermione, both of them should be interested in this death party as well." Harry nodded in agreement, Augustus, and turned to leave the library.

At seven o'clock, Augustus, Harry, Ron, and Hermione met in the Great Hall and walked through the doorway that led to the crowded Great Hall. It was very inviting, with its lights and candles, and the gold plates on the table, but they walked in the direction of the basement classroom.

The aisle leading to Nick's party, which was almost headless, was already lit with candles, but the effect was not pleasant at all: they were small, black, thin candles that shimmered blue as they burned, and looked eerie even when they shone on the faces of the three of them, full of life. With every step they take, the temperature drops. Harry shuddered and tightened his clothes around himself. At this moment, he heard a sound, as if a thousand fingernails were scraping against a huge blackboard.

"That's called music, too?" Ron whispered. "You can't guarantee that the ghost's hearing will still be normal." Augustus smiled slightly. They turned around a corner and saw a nearly headless Nick standing in a doorway, draped in a black velvet curtain.

"My dear friend," he said with infinite sorrow, "welcome, welcome to you, I am so glad to come"

He took off his hat with feathers and bowed to invite them in.

The sight was incredible. The underground classroom was filled with hundreds of milky, translucent figures, most of whom swam around the crowded dance grounds, waltzing to the terrible and trembling sound of thirty bandsaws, which sat on a stage covered with black cloth. A thousand candles are also lit in a chandelier overhead, emitting a midnight blue glow. The breath of the three of them formed a cloud of mist in front of them, as if they had walked into a cold room.

"Shall we take a look around?" Harry made a suggestion to warm his feet.

"Be careful, don't pass through someone's body." Ron said nervously as they walked slowly around the edge of the dance arena, past a group of sullen nuns, a ragged man in chains, and a fat monk. A Hufflepuff ghost, with a lively and cheerful temperament, is chatting with a knight with an arrow stuck in his head. Harry also saw Barrow the Bloody, which was in his expectation. Barrow the Bloody Man is a ghost of Slytherin, scrawny, with straight eyes and silver blood stains on his body, and the other ghosts are making room for him.

"Oh, oops," Hermione stopped suddenly, turned quickly, turned quickly, I didn't want to talk to the crying myrtle-"

"Who?" As they hurried back from their original paths, Augustus asked.

"Staying in the bathroom?"

"Yes. The bathroom broke down all year round because she kept throwing tantrums and splashing water everywhere. As long as I can avoid it, I try not to go there. You go to the toilet and she screams at you, it's horrible-"

"And such ghosts? Sounds pretty interesting. Augustus touched his forehead and said lightly.

"Look, something to eat!" Ron said. At the other end of the basement classroom is a long table that is also covered with black velvet. They couldn't wait to step forward, and then they stopped in horror, the smell was so bad. Large chunks of rotten meat were placed on beautiful silver plates, and black, charred cakes were piled up in large trays; There is also a large amount of maggot-infused lamb belly, a piece of cheese covered with green hairs. In the center of the table sat a large grey cake in the shape of a tombstone, on which the words were spelled out with tar-like frosting: Sir Nicholas de Minci died on 31 October 1492 Harry was stunned. Then a fat ghost approached the table, crouched down, and passed directly through the middle of the table, his mouth wide open, just past a large stinking salmon. "Can you taste it if you walk through it like this?" Harry asked him. "Pretty much." The ghost said sadly, turning and drifting away. "I guess they let the food rot to make it taste stronger." Hermione said insightfully, covering her nose and leaning forward to take a closer look at the rotting meat belly.

Countless ghosts floated in mid-air, and various transparent bodies shuttled back and forth in the air, like a complicated stage play, Augustus's slender figure reflected in the miserable white light, slowly pulling out an eternal image.