PS: Last month's 2600 monthly pass was added

"I'll have to patrol the campus until 11 o'clock!" Draco Malfoy shook his head, then told Gregory Goyle on the side, "Gregory, you send Christoph back to the common room, lest that damn Weasley get him in trouble again." ”

"Okay!" said Goyle, glancing at Jon, "Let's go, Christopher!"

They parted ways with Malfoy and Crabbe and went to the basement together.

As he walked through the Potions classroom, Jon suddenly noticed a ray of golden light flying past him.

"Gregory, why don't you go back first......" he offered to Goyle, "I suddenly remembered something, I had to go to Professor Snape...... Or do you want to go with me?"

Hearing Professor Snape's name, Gregory Goyle shuddered.

In Potions class, he was not without a small amount of reprimands from Professor Snape.

"No need...... I...... I'll go back first......" Goyle stammered.

After more than ten seconds, he disappeared without a trace.

The corridor in the basement was pitch black, and Jon deliberately walked to a corner where there was no portrait, and then called out softly:

"Fawkes?"

A flash of golden light flashed, and the big bright red bird flew in front of Jon and winked at him.

"Professor Dumbledore is free, isn't he?" Jon asked in a low voice.

Phoenix nodded, then pointed her tail feathers at Jon.

Grabbing Fawkes's tail, he felt only a moment of darkness, and only a mixture of gold and red in front of him......

......

Jon Hart appeared in the Headmaster's office, and he also took off the Iron Ring from his hand.

The wall in front of me, covered with portraits of the headmistress, almost half of the portraits, was now empty.

"They're all going to deliver the news, we've been busy lately!" a gentle voice came from above Jon, and Headmaster Dalys-Derwent smiled kindly at him, "It's our duty to serve the Headmaster of Hogwarts. ”

"Hmm!" Jon smiled and nodded to Headmaster Derwent, then walked around the wall.

Albus Dumbledore had what appeared to be a handful of herbs that seemed to sneeze grass in his hand, feeding the phoenix over there.

"Fawkes has been getting more and more greedy since I met you!" Dumbledore said with a smile, "This is not good news...... Jon, sit down!"

Jon sat down across from Dumbledore with a well-behaved face, then took out his notebook and spread it out in front of him.

"Speaking of which, this is the first time you've asked me for advice!" Dumbledore put a handful of sneeze grass on the plate under Fawkes, wiped his hands, and sat down, "Fortunately, the question you asked is within my expertise. ”

"It's okay if you're not there!" Headmistress Phineas Black's big grinning voice suddenly came from behind Dumbledore, "And us!"

Jon suddenly noticed that there were more than a dozen portraits of the Headmaster still here, all of which had been buried in one behind Dumbledore, and looked at this side excitedly.

"Listen, don't interrupt Albus!" Jon heard Headmaster Dalyse Derwent warn from there, "That's rude." ”

"But if Albus can't answer, isn't it our turn......" Jon said as he saw Principal Christophe Evra.

"And if he makes a mistake, we should point it out......" spoke of Armando Duppet, Dumbledore's predecessor, whom Jon had seen in Hogwarts, a piece of school history.

"Ahem!ahem!" Dumbledore coughed lightly, pretending not to hear their conversation.

"So let's get started......" he whispered, "start from the beginning!"

......

"What do you think of Transfiguration, Jon?" Dumbledore asked.

Jon pondered for a moment and took the initiative to speak: "The essence of Transfiguration is a type of magic that uses magic as a medium to change the essence of matter, so that one substance becomes another!"

"That's a good summary!" Dumbledore complimented, "Maybe I'll have to write it down and put it at the top of the first chapter when I'm going to write a book on Transfiguration someday!"

"Professor, you're laughing......" Jon scratched his head.

"Not kidding......" Dumbledore shook his head, "So Transfiguration must follow a few basic principles. ”

"Five exceptions to the law of Gamp's transformation?" Jon asked softly.

"Three exceptions, to be exact!" Principal Phineas Black's voice came from the wall on that side.

"Don't interject, Phineas!" exclaimed Headmaster Dalys-Derwent.

"So rude, drive him away!" the rest of the headmasters chimed in.

Poor Headmaster Black was squeezed out of the portrait, then huffed back into his own portrait and began to pretend to sleep.

"Phineas is right...... Dumbledore was unfazed by their commotion, he still smiled and said, "The first two are not really important to us...... The first is food, and the second is money. ”

"Food first...... Dumbledore raised his wand and tapped a silver knife on his desk...... I saw that the knife changed little by little, and finally turned into a fragrant sausage.

"It's not impossible!" said Dumbledore with a smile, "Would you like a bite?"

Jon quickly shook his head.

"It's not that difficult to use Transfiguration to make delicious food, but it's strictly forbidden, because different wizards have different levels of magic, like me, you can make this Transfiguration last for hundreds of years and thousands of years, so that there will be no problem in conjuring food, while some ordinary wizards may only be able to control its maintenance time for a few hours, so if you eat it and the food returns to its original form in the belly, it will have terrible consequences. ”

Therefore, in order to prevent accidents, the transfiguration of food is strictly prohibited...... However, this does not affect the fact that a skilled wizard cannot turn sand into food to satisfy his hunger if he is trapped in the desert and is hungry and thirsty. ”

"The second rule, which is that money is logically the same as food. ”

"Ulrick Gamp actually made a little mistake in this regard...... Because most of the magic about gold on the market is a 'copy charm' or some simple trick......"

"Gold is arguably the most magically stable metal, which is why it was chosen as the currency. For a long time, it was generally believed in the wizarding world that it was impossible to use Transfiguration and convert other substances into gold...... It wasn't until my friend Nick's work came out that he proved that gold is not inconvertible...... Of course, he also caused a sharp depreciation of the gold gallons at that time. ”