In the morning auditorium, owls swept over the students' breakfasts, and letters fell like catkins.

Roy took the fluttering letter and put it away. The Ravenclaw students on the side were a little curious, after all, this was the first time they remembered that Roy had received a letter, but Roy didn't open it on the spot, and they didn't want to ask.

After dinner, Roy opened the letter from Nicol Lemay, and he could probably guess what was written in the letter, and sure enough, it was an invitation.

But what is written in the invitation letter can be in no hurry, at least Nicol Lemay is not in a hurry. This is normal, after all, they have lived for more than 600 years, and there is no shortage of time.

More important than letters, his recent glimmer of inspiration.

Roy came to an uninhabited corridor of the castle, his fingertips glowing with a tiny light, and a miniature mana model slowly rotated around the point of light.

It was the fluorescent flicker, and Roy had been wondering if he could squeeze something out of this magical mana model all these days, and it turned out that he had discovered something interesting.

In the glowing mana model, there is a mana node that is darker than the other mana nodes, which Roy intentionally turned down the mana output of this node.

Roy extradited a silk thread from his mana source to pull with this node, and the moment it was connected, his mind suddenly became more sensitive and beating.

Roy thought about the past and adjusted his emotions, and the color of the light changed with his emotions and inner feelings.

When in a happy mood, it will turn silver, and when angry, it will turn red...... Is it? Roy silently mentally noted the color changes in various situations.

Syllable. The color changed again, this time the color of the light spot changed to light green, and Roy was a little happy, and the color of the light sphere immediately changed to a green and silver Slytherin. Roy suppresses his happy emotions and records the green emotion: indifference.

He tried to increase his mood swings, and as his apathy grew, the orb of light grew darker in color, not much different from the Black Lagoon water seen in the Slytherin common room.

Roy nodded in satisfaction, and now he could shout "Avada Suo" when he saw someone in the future, and then throw a bunch of balls of light, creating a visual effect of a group of Avada Suo life spells.

……

After class in the morning, Roy took the trio to the abandoned classroom to practice magic, and after several months of training, the level of the three of them has greatly improved, and they can already control their mana very well.

But today all three of them were a little absent-minded, as if they had something on their minds.

Is it because of the Philosopher's Stone? Roy guessed.

"Take your wand and try to extract the mana and wrap it around a thin thread." Roy said.

The trio did as they were told, with Harry being the best, Hermione second, and Ron ......

Roy silently watched as Ron's mana flowed smoothly out of his mind, then stuck in his wand for a while before flowing out.

"Ron," Roy sighed, "and this wand of yours is not for you right now, and I can lend you some money to buy a new wand." ”

Ron's face flushed, and he stumbled, "But I don't have the money to buy a wand......," and he said quieter and quieter as he spoke, until at last he could barely hear him, and his head was lowered.

"The money is borrowed from you. The money can be repaid at any time. Roy straightened his face and looked serious, "But a good wand is too important to you right now." In the future, you may be able to cast spells without a wand, but now you must have a wand that works for you. ”

"Okay......" Ron hung his head listlessly.

At this time, Hermione suddenly had an idea and asked, "Roy, do you know Nicol Lemay?" ”

Sure enough, because of the Philosopher's Stone, Roy thought, but where did they know that? In the original book, Hagrid blew himself up after a Quidditch match, but now the trigger that induced Hagrid to leak - that is, Snape's "curse" on Harry did not happen at all, so Hagrid must have blown himself up while chatting with Hagrid? Or did Dumbledore prompt them in some other way?

"How did you know that name?" Roy asked bluntly.

"Forehead......" Hermione and the two behind her looked at each other, not knowing whether to tell Roy the truth and involve him.

In the end, they decided not to tell Roy the truth, after all, this matter can be involved in one person alone.

"It's a book on the history of magic......" Hermione was interrupted before she could finish speaking, "I said ......"

"I say......" Roy sighed helplessly, "you don't have to hide it from me. I'll have to save you if something happens, and it's better to know something than nothing. ”

The trio's faces flushed and their heads bowed.

"So, you're trying to say that someone is trying to steal something from under the trapdoor in a room in the hallway on the right on the fourth floor, and Hagrid happens to know what it is, and accidentally slipped through the crack, allowing you to get a clue?" Roy sat in the air, looked down at them, and said.

"I think Snape is the most suspicious." Harry brought up his biggest suspect.

"Harry, you've always thought too badly of the teacher!" Hermione retorted loudly.

Seeing that the two were arguing, Roy had no choice but to hurry up and say, "You don't really need to care about the things in the trapdoor. ”

"Why? Since Dumbledore had set up a special space for that thing, it should be important. Harry asked.

"If it's really important, then Dumbledore should take it with him, that's the safest thing to do." Roy woke up the dreamer with a word, and the trio all stammered.

Roy looked at them dumbfounded, and sighed a little, is this Gryffindor, fortunately he didn't go there, otherwise his brain might be infected.

"That's all for today." Roy said.

"Oh yes, Harry, come to the library on Christmas night, I have something to tell you." Roy said.

"Roy!" Hermione was annoyed, how could she be on a night tour of the school in the middle of the night!

However, before she could say anything, Roy left, and the figure was nowhere to be seen, leaving her where she was.