According to Blake, when they first made the "Living Point Map" map, they also had a lot of difficulties, because Hogwarts Castle is constantly changing, especially the staircase part, if you remove this part, then the map will only have classrooms and secret passages, but it can only be called a schematic diagram of the castle structure, not a map, because you can't follow this thing to show the way. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

"We came up with various proposals, and Potter thought that he should be able to use magic to probe the structure of the castle, but it never worked," Blake continued, "Lupin wanted to draw the structure of the castle in various times and change it according to time, but he could not find a pattern of changes in the castle, so he did not succeed; Blake said in disgust.

"What about you?"

"Me? I've heard my family say that Hogwarts has a strong magical energy, and for a thousand years, successive headmasters have released different magic, even the original founder of Hogwarts, Godric Gryffindor, Helga Hufflepuff, Rowena Ravenclaw and Salazar Slytherin, all four of them, have released a lot of magic in the castle, so many years, no one can tell the role and function of these magic, but at least it is okay to block Potter's detection magic, as for the method Lupin said, those stairs and doors themselves are the product of mischief, or a by-product of magic changes, otherwise how can there be a pattern, so I knew from the beginning that their approach was not feasible. Blake said this, as if he remembered what they had been like, and a smile appeared on his face.

"But I know them, and even if I tell them that their methods don't work, they won't listen, and Potter is because he's so confident that he can always figure it out, and Lupin, he said, 'You're right,' but when you pay attention, he's often standing silently in the stairwell. ”

"And how did you solve this problem?"

"No, that problem wasn't solved by me. You know, when I was very young, I was learning about magic at home, so I could easily keep up with the professors, and I had been learning years in advance. ”

"I once read in the notes of my great-great-grandfather, Phineas Nigelus Black, that when Hogwarts was arrogant, in order to better supervise the students, he once made a picture to hang on the wall, and that picture could show the movements of the students in the school at any time, I wonder if he became the most unpopular headmaster in the history of Hogwarts......"

To be able to keep up with the movements of the students? and to think of the traditions of the Black family, that headmaster must be super annoying.

"'Living Point Map', you can't change that picture, right?" Darren couldn't believe it, if it was true, what a loser this Blake was.

"No, the painting itself was destroyed when Phineas left Hogwarts, and he didn't want to leave it to the next Headmaster, but his notes mention that he had made several experiments before making the painting, and one of them was kept in my house, and according to the notes, it should be able to show the structure of the castle. ”

"So, you brought that parchment?"

"Yes, but when I brought it, the parchment was empty, and no matter how much I used my magic, it didn't show anything, and I thought I had taken the wrong old parchment and gave it to Lupin. ”

"But the next day, Lupin told me that there was something wrong with the parchment, because part of the Hogwarts map he had drawn on it was missing, and that part of the castle was the one where the structure of the castle often changed!"

"Then Lupin made up the missing part, but soon after, the painting disappeared again, which made us all feel strange, but we didn't understand what was going on, we didn't think of going to the professor like you, just putting the map aside. ”

"After some time, Lupin accidentally turned over the parchment, and found that the contents of the paper were partially gone, leaving intermittent lines, so he smeared a part of the map with ink, and found that the scribbled part showed a part of the Hogwarts map, and the remaining lines of the map he had drawn before were also retained because they overlapped with the original lines on the parchment, and the blank parts were gone, so he drew the whole parchment with ink, and the result was ......" Black paused and licked his lips, and Professor McGonagall immediately waved his wand, and a cup of tea flew from the table to Black.

"Thank you. ”

"No, I'm looking forward to what follows. ”

After Blake finished his tea, he continued, "Lupin found a map of Hogwarts on parchment. ”

"Is that the 'Living Point Map'?" asked Harry, anxiously.

"No, it's far from it. Seeing that Harry was also so interested, Blake replied with a smile.

"Lupin was at first as you thought, but soon he noticed that part of the map had disappeared again, just like last time, the part of the structure had changed, so he stared at the map all day, and finally found the pattern of the 'living point map', that is, what was drawn on parchment would only be visible if it was the same as the structure of the castle. ”

"In that case, you can pour ink on the parchment at different times to show the structure of the castle!" said Darren confusedly, "but the 'Living Point Map' doesn't need to be inked." ”

"You're smart, Potter thought so at first, but then we found out that what you smeared with ink only shows for a short time before it disappears, so you have to carry a bottle of ink with you to use the map, and only for a short time. ”

Eventually, Potter discovered that the parchment was sensitive to magic, and that it would be visible for a long time if you used a wand, but that meant drawing every line on the map with your wand at the same time as the Transfiguration Charm. ”

"Draw them all?"

"Yes, draw them all once, no, not just once, the part about the structural changes needs to be depicted repeatedly, otherwise it will become blank. Blake smiled wryly and said, "Maybe that's why Phineas gave up back then, this kind of menial work is not suitable for our family." ”

"But now, I'm not alone, and Potter and Lupin, and we've spent three weeks together, carving out the map every night, and eventually, a few of us have made this map show every detail of Hogwarts. ”