Ten minutes later, Link, holding a bottle of pitch-black and sticky potion, began applying it onto his body.
This was handed to Link by Snape.
Although Snape didn't say anything directly, Link was sure that this bottle of potion must be extremely valuable. Because its effects were simply too strong.
As Link rubbed the potion liquid onto his body, the bruises densely covering the surface of his skin were rubbed off just like useless dirt when scrubbing in a bathhouse.
Even the serious bruise on his chest was the same. And while rubbing, Link's heart still hadn't recovered from the shock and joy.
He didn't know exactly what Snape had just imagined in his mind, but no matter what, the result now was the best for Link.
Because Snape clearly no longer intended to pursue the matter of the wounds on Link's body, and more importantly, he was actually preparing to teach Link Sectumsempra.
What is Sectumsempra?
It's one of the few high-damage spells in Hogwarts. When cast, it is silent and without a trace, and once it hits, it will cut a very deep wound on the target's body.
Not only that, strictly speaking, it is also dark magic, and the cursed property it carries means the wounds it causes cannot be healed by other means and can only be neutralized with a counter-curse.
Moreover, its spell penetration and energy clash properties are extremely strong. This was evident from Snape's demonstration earlier.
You must know that the target Snape used for the demonstration earlier was a thick stone door entirely made of anti-magic obsidian. Yet even so, it was still slashed by Sectumsempra and left with a terrifying mark.
Most importantly, Sectumsempra is just so cool.
Right now, Link could even imagine himself casually swinging his wand, and then sword energy sweeping across thirty thousand miles, the light of the blade illuminating all nineteen provinces.
Thinking this, a silly smile unknowingly appeared on Link's face. But just then, Snape's cold voice rang out again.
"Alright, let's begin."
"Oh, oh!"
Link snapped out of his fantasy, put on his clothes, and very naturally stuffed the half bottle of unused potion into his coat.
Seeing this, Snape's facial muscles twitched slightly, but in the end, he didn't say anything. He raised his wand and said, "Sectumsempra is extremely difficult to learn. I don't expect your pig brain to master it in a short time. But what you must understand is, my time and patience are both limited. If you still can't learn it before the Christmas break ends, then…"
Snape didn't finish his sentence, but Link understood what he meant.
Link finally adjusted his expression and nodded at Snape with a serious face.
Seeing this, Snape slightly raised his chin and said, "Now, watch my movements closely."
"Sectumsempra!"
Whoosh~
A slight breeze passed, and another slash appeared on that poor stone door.
Fortunately, compared to the first one, this slash was clearly much shallower and shorter. Obviously, Snape held back his strength this time.
"Now, it's your turn." As Snape spoke, he stepped aside, which left Link a bit stunned.
Because to be honest, Snape's movements were too fast, and he didn't see them clearly.
But looking into Snape's deep, ice-cold eyes, Link ultimately braced himself and raised his wand.
"Sectumsempra!"
Link forcefully swung his wand.
However, nothing happened.
For a moment, the atmosphere in the office became somewhat awkward. Link gave an embarrassed smile and turned to look at Snape, only to see that Snape's face was expressionless as he coldly said, "Idiot, your arm is raised too high. Continue."
"Sectumsempra!"
"You really have a pig brain. The arc of your wand swing is too small. Continue."
"Sectumsempra!"
"Your tone is too flat. Casting a spell is not like reciting from a book. I need you to infuse real emotion into it! Merlin! Do you even have a magical gift? Continue!"
"Sectumsempra!"
"Sectumsempra!"
Accompanied by Snape's venomous tongue, Link swung his wand again and again.
Although Snape's attitude was truly awful and his words really hurt, Link had no complaints at all. He was very clear, the fact that the other party was willing to teach him was already good enough, and he wasn't learning for Snape's sake anyway.
Besides, aside from all that trash talk, Snape's instruction was actually very reliable. Link could clearly feel that his movements and incantation tone were gradually becoming more standard.
Finally, after the 67th time he swung his wand, a new slash mark appeared on the thick anti-magic obsidian door in front of him.
That mark was very shallow, so shallow that if you weren't paying attention, you would miss it.
But without a doubt, Link succeeded.
[Sectumsempra LV1 acquired!]
"Yes!"
Link cheered, excitedly turning his head to look at Snape.
The latter stood still on the spot. Although his face still showed no expression, Link could clearly feel that Snape was actually somewhat surprised.
This made Link a little proud. The corners of his mouth lifted slightly, and he looked at Snape with an expression that said, 'That's it? That's all?'
Snape's face darkened. He clicked his tongue, then shouted, "The power is too weak! Are you planning to use it for giving someone a massage? Continue!"
"Yes, Professor Snape!"
Upon hearing this, Link gave a cheeky military salute to Snape, then continued practicing Sectumsempra.
With the help of the system, in the practices that followed, Link successfully cast Sectumsempra every time.
Snape was truly a bit shocked. Because this proved that Link hadn't just succeeded earlier by dumb luck, he had genuinely mastered this spell.
That was a bit terrifying. You have to know, Sectumsempra was actually created by Snape himself back in his student days, so he knew very well just how difficult it was.
For a third-year little wizard, even with Snape's instruction, it should be impossible to learn it in just this short amount of time.
But when he thought about the terrifying things that Dumbledore had done to Link before, and Link's experience recently inventing the Human Explosion Curse, Snape understood.
With this kind of talent, it was normal for him to master Sectumsempra so easily.
Only… it still made Snape feel a bit embarrassed. After all, he had just said he didn't expect Link to learn it.
Snape pursed his lips, raised his hand to stop Link from continuing practice, and called him over, raising his wand.
"Sectumsempra."
"Ah!"
With a painful cry from Link, a fine slash appeared on the back of his hand, and a series of tiny blood beads quickly welled up.
"Now, we will learn the counter-curse to Sectumsempra." Snape said flatly, his face still showing no emotion.
But somehow, Link had a bad feeling.
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