"Where did you go yesterday? We waited until we fell asleep. You didn't come back with food. The chapters were updated the fastest," Michael Kona said, holding a pair of big dark circles, "I waited until three in the morning to fall asleep!"

"Sorry, Michael." Silver said lightly, "The kitchen's house elf is so enthusiastic. I drank a few more bottles of butterbeer there and slept in the kitchen for one night."

"You can fall asleep in the kitchen?" Antonin said he didn't believe it.

"The house elves helped me clean up a bed and imparted silent magic to the bed. I slept very comfortably." Silver moved his limbs and said that he was very energetic. "Okay, guys, don't care about those late-night snacks you haven't eaten, just think it's better to lose weight."

"But I'm very hungry now and I'm very upset."

"Then keep up with the upset, dear Terry," said Silver, "Who told you to sleep too hard and miss breakfast?"

They sit by the fireside of the common room, and the students who are still in the common room are basically in the sixth and seventh grades, with much fewer courses than other students.

"A girl from Hufflepuff asked me to ask you when the next class of the Black Magic Defense Art Class you hosted, and she wanted you to do a one-on-one class for her." Michael Kona quirkyly squeezed her eyes at Silver.

"Michael, are your eyes stinged by harassment?"

Everyone laughed.

Michael said furiously: "Hi, guys, we should be consistent with the outside world, right?"

"Are you instigating everyone to fight against me like the chief?" Silver touched his nose. "I should ask you to teach Erose Meadgan one-on-one black magic defense next time."

"Michael, promise, Elose Midgan's acne looks pretty cute, too." Terry Butter said fearing that the world will remain unconfused.

"Shut up, I think you are very suitable for Terry."

"Okay, guys, just have to make a joke." Silver said, "We really have to go to the Dark Magic Defense class-I'm talking about Professor Snape."

———————————————————————————————————————————

"You're late again. Potter," Snape said coldly as Harry hurried into the candlelight classroom, "Gryffindor deducted ten."

Harry glared at Snape and rushed to the chair next to Ron to sit down. Half of the people in the class were still standing, picking up books and organizing things, and he was not much late.

"Where did you go just now? Harry?"

“I just went to the bathroom and drank too much pumpkin soup this morning.

"I want to see your dementor papers before class begins." Snape said, swaying his wand, twenty-six rolls of parchment rose into the air. He fell neatly on his desk, "I hope for you this time is better than the shitty stuff that resists the soul-taking curse. Now, please open the book and turn it to-what, classmate Feinigan?"

"Sir," said Semo, "I have a question, how do I distinguish between corpses and ghosts? Because the Prophet Daily mentioned the corpses that attacked people-"

"No. No, no," Snape said in a tired tone.

"But sir, I heard people say-"

"If you read that article well, Finegan will know that the so-called Yin corpse is just a stinky thief with too much medicine. Montongus Flech."

"But the Prophet Daily said-"

"Student Fenigan, I think you are obviously too lucky to be able to take the n.e.w.ts-level black magic defense class. I have said that you have not finished reading the report. If you finish reading the report carefully, you will find that Montongus has knocked out an extra dangerous potion with a strong addiction. If this potion is taken a slightly larger dose, it will damage your brain and nerves. It will make you fall into an extremely excited state, and even make you lose your mind and attack and bite others in unimaginable ways. It looks like a yin corpse. Montongus has knocked out too much of this medicine."

"What's that potion?"

"You have too many questions, Fenigan, I am teaching black magic defense rather than potion. Since you asked about the difference between Yin corpse and ghost, then I'll ask someone to answer this question. Potter, do you know the difference between Yin corpse and ghost?" Snape said as he suddenly pointed to the back of the classroom, staring at Harry with his black eyes.

The whole class looked back at Harry.

"Uh—this—the ghost is transparent—"

"Oh, very good," Snape interrupted him with his lips curled his lips, "Yes, it's obvious that the last six years of magic education have not been in vain for you, Potter. The ghost is transparent."

Pansy Parkinson laughed loudly. Several others also smirked. Harry took a deep breath and said calmly, despite his anger: "The ghosts are transparent, but the yin corpses are dead corpses, right? So they should be solid-"

"A five-year-old child can tell this." Snape laughed, "The Yin corpse is a dead corpse called by the curse of the black wizard. It has no life, but is used to execute the wizard's commands like a puppet. And the ghost, I believe everyone knows now, is the mark left in the world by the departing soul... Of course, as Potter wisely pointed out, it is transparent."

"But Harry is talking about the most practical way to distinguish!" Ron stood up to protect his friend, "If we meet one in the dark alley, we will quickly see if it is solid, and will not ask: Sorry, are you a departing soul left in the world?"

There was a burst of laughter in the classroom, but it was immediately suppressed by Snape's eyes.

"Gryffindor is deducting ten more. I don't expect you to say anything more brilliant, Ron Weasley - a student who is so solid that he can't even have a half-inch appearance in this room."

"Are you laughing at me? Professor, but I'm sorry, no one can show his phantom in Hogwarts!" Ron shouted.
Chapter completed!