The professor's office looked a bit messy, with two piles of Christmas presents in the corner, one of which is scattered with partially opened boxes. The large workbench is also cluttered with odd items, a palm-sized silver plate with runic symbols around the edge, a dozen dark green coins with a heavy metallic sheen, disassembled golems, a stack of parchment, a few chestnut wood plate-shaped objects, and a rune carving knife, and two or three books.

Felix noticed Hermione's gaze, "It's all about what we've been working on in recent times, some of which you've been involved in."

Hermione nodded, the silver plate is Pensive that Professor found, need to be repaired; as for the coin she had also seen at the Magic Rune Club assembly, can turn into a dark green snake, she just did not expect there would be So many, is it a new teaching tool?

Or, maybe it is prepared for the Magic Rune Club?

"Sit down for a moment, as I change my coat." Felix went into the bedroom and changed into a loose navy blue jumper, and when he came out, he found Hermione holding a small dark green snake in her hand and teasing it with her other hand.

Hearing footsteps, she explained in some panic: "Professor, it's the coin you put on the table, I tried to sense it with my magic - and it became like this."

Felix smiled and said, "You can put your wand against its head and silently chant: infinity."

Hermione looked down at the small snake in her hand, it does not look hideous, there is no reptile kind of slimy feeling, but rather like some kind of metal craft, dark green scales embedded in a layer by layer, all the way to the tip of the tail.

The snake's eyes were deep and bright, swaying with her sight.

She drew out her wand and gently tapped the snake with the tip as she whispered, "Infinity."

The little snake nodded at her very humanely and immediately moved up. She felt some tickling in her palm and then its head and tail linked on the little finger of her right hand, then morphed into a ring and remained motionless.

"This is - the Ring of Ouroboros Serpent?"

"That's right, it's sort of the symbol of the Magic Rune Club, and will be given to you at the assembly after Christmas. It has two forms - the coin and the Ring of Ouroboros Serpent, it will replace the Fever Knut."

Felix joked, "More than one person told me that the Fever Knut is too easy to be mistaken as money, and you have to be mindful every time that you don't pay it out."

Hermione, interested in studying the snake ring on her hand, soon found the trick, she waved her hand, the ring moved, re-transformed into a small snake, and then the small snake's body coiled together in a single piece, becoming the original coin.

Hermione put the coin back on the workbench and pointed at the chestnut wood disk-shaped object and asked, "What is this? It looks a little like the Pensieve."

"Close enough, the process of studying Pensieve did not go well, nevertheless I did imitate some gadgets - of course, it is not comparable to the Pensieve, but in some people's eyes, it should be interesting."

Felix gestured for her to try it out, and many times Hermione, who is an assistant in the Ancient Runes class, is the first person to try out the runic creations he makes.

Hermione walked over and carefully examined the chestnut wood disk-shaped artefact, which looked very similar to the shape of the Pensieve, only slightly smaller, and at the edges were runic circuits clearly carved with a carving knife, and these circuits were layered and interlocked, so it looked very complex.

What she didn't notice before was that the chestnut plate is covered with a thin layer of fine silver sand. When gently shaken, the silver sand flowed like mercury.

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"Blank pieces of memory, you can see them as necessary filler material."

Thinking about it, Hermione touched the edge of the chestnut plate with her wand, and one by one the runic circuits around the plate lit up, and the fine silvery sand squeezed together by invisible hands, floating up to a foot high, forming a slowly rotating cloud.

She suddenly remembered the bronze-colored smoke that Professor Flitwick had shown in one of his dueling classes, that miraculous magic could also be moulded into various shapes, only it required human manipulation.

The silvery, fine sand-bonded cloud in front of her looked a little more delicate, like a silvery liquid light, stretching and floating with ease.

"What should I do?" Hermione asked.

"Imagine a memory, hint at it, not too private, because it can read your thoughts."

Hermione got startled, but since it had been created by imitating a Pensieve, it must have something to do with memories. She recalled a memory in her mind, and then she extended a finger, pointing at the silver cloud.

The cloud began to churn, silver sand fell like rain, gradually, they gathered on the silver plate and produced a three-dimensional model: it's the second year memory, she together with Harry and Ron in the chamber fighting with the basilisk scene.

Hermione put her head on the table, carefully examine the chestnut wood plate, there is barely half an inch sized "Hermione", it is difficult to describe the strange feeling in her heart. Similarly, Harry and Ron are only slightly larger, the basilisk is half a foot long, is desperately wriggling its body, tail smashed into a "large" stone, looked very vivid.

The Chamber of Secrets structure is also replicated, including the Slytherin statue, the open space in front of the statue, around the snake stone pillar ... which looks small.

Everything on the chestnut wood plate is like a pocket-sized sand model, only when they move. From this perspective, the original dangerous scene also became cute.

Hermione stared dazedly, "the story" is going exactly as she remembered, until Harry leaped down from the Slytherin statue, the small Gryffindor sword thrust in the head of the basilisk, the scene stopped.

Hermione stared blankly at the fine sand slowly spinning on the chestnut wood plate, and did not regain consciousness for a long time.

"This can be, this can be ..." she racked her brain trying to describe her feelings, and finally could only say dryly: "It's amazing."

Felix shook his head, he is not really satisfied, because this thing is not useful to him at all, at most helped him to develop a new way of thinking.

"That's because you have not used the Pensieve before, which can recover all the details in your subconscious mind. If you experience it, you will be surprised to find that your memory contains such a wealth of content, and you know nothing about it ..."

"What you just saw, in fact, Just the chestnut wood plate reading your recollection, and then show it, many places will not be clear."

Hermione recalled the scene she saw, and gradually understood the professor's meaning: "Indeed, I did not see you, Professor Snape and Headmaster Dumbledore, but in fact, you were also in the chamber at that time. Also, some places are blurred, only too minor I did not notice it, such as the Slytherin statue."

Felix nodded and smiled: "You will find that you, Harry and Ron are the clearest, because you are most familiar with them, followed by the basilisk, which gave you a deep impression, and finally the surroundings, speaking of which, your memory is good enough, if you let someone with a slightly poorer memory use it, the surroundings may be a blurred area, or simply can not be visualized."

Hermione concluded, "So it just extracts what we recall on our own and shows it, without being able to reach the subconscious."

"You've found the key, Miss Granger." Felix said praisingly.

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