I've already become a Hogwarts professor, and the system only just appeared.

Su Yu patted Coal Ball's head and said, "Okay, did you hear that? You can't hunt centaurs or other magical creatures. You can go for a stroll now."

Coalball let out an excited howl, then transformed into a black lightning bolt, leaping out of Hagrid's house window at a speed almost imperceptible to the naked eye and into the Forbidden Forest.

Besides its ability to manipulate consciousness, the leopard cat can also walk upright on two legs. In addition, it has extremely fast speed, which makes it almost invincible in the wild. It is also rated as a 5x dangerous magical animal.

Chapter 18 Marauder's Map PRO

Coal Ball went to play, and Su Yu began to examine the materials in Hagrid's hut. To someone who didn't know any better, Hagrid's hut looked dilapidated and old.

But in the eyes of wizards like Su Yu and Snape who possessed the ability to create, Hagrid's hut was simply a gold mine. Unicorn hair, eight-eyed spider teeth, various dried wild herbs, and so on were all priceless.

Back in his school days, Su Yu obtained many of his experimental alchemy materials from Hagrid, and as usual, he casually picked some things from Hagrid's room.

Hagrid didn't care. Su Yu was his friend, and these things were useless to him anyway. If his friend wanted them, he could take them.

Of course, Su Yu couldn't just take it for free. He took out a magic phone, gave it to Hagrid, taught Hagrid how to use it, and added him to the family's group chat.

Before leaving, Su Yu handed Coal Ball's collar to Hagrid and said, "When Coal Ball comes back, put the collar on her, and she will come back to me on her own. Okay, I'm going back now."

Hagrid took the collar and said, "Actually, if Coalball wants to stay here, that's fine too. I'll take good care of her."

Su Yu chuckled. Hagrid's little scheme was really shrewd, but he didn't care and said, "No problem. If she wants to stay here, that's fine too."

After leaving Hagrid's cabin, Su Yu headed towards the castle. It was already late at night when he suddenly heard a rustling sound in the grass ahead. Su Yu pressed his glasses and activated the thermal imaging mode.

They immediately spotted the first two humanoid creatures, who were sneaking out of a hidden passage. Upon closer inspection, they found that they were holding a piece of parchment.

"Fred, alright, hurry up and put the map away. This thing can only show people on campus, it's useless here." A voice came.

“Alright, George, I understand. Now, turn on the magic lantern!” another voice replied.

These two were the Weasley twin brothers. When they opened the magic lantern, they were suddenly surprised to find that there was a person standing silently behind them.

"Ah!" Fred and George cried out, turning around and falling to the ground as they backed away, but they also saw clearly who the person in front of them was.

"Professor Su... Professor Su!" The two looked like children who had done something wrong—no, they were exactly children who had done something wrong—and dared not meet Su Yu's gaze.

Su Yu stepped forward, snatched the map from their hands, and said with a grin, "Where did you get this map?"

George said, "We found it while Filch was in solitary confinement."

"So it was stolen?" Su Yu asked.

Fred immediately retorted, "Filch is a dud; he can't use this map at all. It's a waste for him. This isn't stealing; it's just a reasonable allocation of resources!"

"Hehe, that's a pretty good reason. I remember that Headmaster Dumbledore just said at the opening ceremony a couple of days ago that students are prohibited from entering the Forbidden Forest at night, right?" Su Yu continued to ask.

“I…we haven’t entered the Forbidden Forest yet. We’re just strolling around here for a bit before heading back,” George continued, trying to justify himself.

"Alright, lads, you don't need to lie to me. Even if you didn't enter the Forbidden Forest, being here now is still a violation of school rules."

Su Yu thought for a moment and said, "Gryffindor lost 10 points because of you, and this map is confiscated. Now come back with me."

After saying that, Su Yu turned and walked towards the castle, while the twins, like wilted eggplants, lowered their heads and followed behind him.

Before he could take two steps, Su Yu turned around and stared intently at Fred and George, his eyes filled with such eagerness that it even frightened the two little ones.

The reason is simple: just now, the system notification sounded again: Congratulations on completing the achievement "The Enemy of Gryffindor" and gaining +1 Universal Skill Point.

Because of your framing, Gryffindor has lost 10 house points, and you have become Gryffindor's acknowledged enemy.

Su Yu was still speechless at the system's description. He hadn't framed anyone; it was simply that the two little lions had broken the school rules and deserved their points deducted.

However, Su Yu didn't want to dwell on it. He just wanted to know, if losing 10 points could lead to the achievement of being an enemy of Gryffindor, what about losing 100 points, or even 1000 points?

Since there are enemies of Gryffindor, will there also be enemies of Hufflepuff and enemies of Slytherin? Extending this further, since there are achievements for deducting points, will there also be achievements for adding points?

A series of ideas flashed through Su Yu's mind. He was very excited and couldn't wait to try it out, to give the two boys 10 points and then deduct 100 points.

After hesitating for a long time, Su Yu finally gave up. It was too unreasonable to do it this way, and deducting 100 points at once was beyond his authority. There would be plenty of time in the future.

After escorting the twins back to the Gryffindor common room, Su Yu pointed to the map before leaving and warned, "Don't wander off again, I can see you!"

"Understood, Professor Su!" the twins replied listlessly and went into the common room.

Holding the map, Su Yu returned to his office. He had been coveting this Marauder's Point map for a long time, and today he finally got his hands on it.

The creator of this map was Sirius Black, another alchemical genius in the same grade as him.

At that time, Su Yu and Snape were on one side, while James Potter, Sirius Black, Lupin, and Peter Pettigrew were on the other side, and the two sides often had some minor conflicts.

Snape alone wouldn't have been able to defeat Potter and his group, but with Su Yu's help, the two sides became evenly matched.

At that time, Su Yu was a famous alchemy genius in the whole school, but the existence of this Marauder's Map has always been a thorn in Su Yu's side.

Su Yu had tried to recreate this map more than once, but he could never achieve the same effect as the Marauder's Point map, and in the end he had no choice but to give up.

Now that he has obtained this map, he must study the alchemical secrets it contains.

Back in his office, Su Yu immediately took out the parchment map and a set of his alchemy equipment, and conducted a comprehensive scan and examination of the parchment map.

After a long while, Su Yu burst into hearty laughter: "Hahaha, Sirius, I thought you were some kind of once-in-a-century alchemy genius who could invent something like the Marauder's Map that even I couldn't achieve. Turns out you were just using tricks."

However, Su Yu immediately denied himself: "No, no, no, you really are a genius. You were able to find such a loophole!"

It turns out that Sirius Black's Marauder's Map wasn't as magical as people thought; it didn't function as a map through its own magical circuits or runes.

To be more precise, this map is just a screen; its true core is Hogwarts Castle itself.

Sirius simply found an interface in the magical circuits of Hogwarts Castle and presented it in the form of a map.

Having understood the principle, Su Yu made another attempt by connecting this interface to the Magic Phone. As a result, another app appeared on the Magic Phone, marked by a castle, and its function was naturally an upgraded version of the Marauder's Map.

Chapter 19 Hogsmeade (4k)

Su Yu was thrilled to have gained another skill point. In the Muggle Research class that week, he would give or take points to the young wizards of each house whenever he had a chance.

This earned him four more achievements. First, as he expected, were the Slytherin's Enemy and the Hufflepuff's Enemy, which were earned by deducting more than 10 points from these two students.

In addition to these two achievements, the achievement you get when you lose more than 10 points to Ravenclaw is called: Ravenclaw's Shame.

Because of your incompetence, Ravenclaw has been deducted 10 credits, which could cost Ravenclaw the House Cup. Fight back and win back honor for the students. Boost your general skill points by 1.

When he scores ten points on Ravenclaw, he also triggers an achievement called Ravenclaw's Glory.

Due to your outstanding performance, Ravenclaw has earned 10 Academy Points, which could very well lead to Ravenclaw winning the House Cup. Keep it up! Reward: 1 General Skill Point.

Regarding these two achievements, Su Yu could only say that the system was overthinking it. What level is Ravenclaw? They want to win the House Cup? Would Dumbledore agree? Would Snape agree? It's simply wishful thinking.

However, the bonus points given to the other three colleges did not result in any related achievements. Su Yu guessed that the next wave of skill points would probably have to wait until the bonus and deduction points reached 100 points.

Gaining four more skill points at once made Su Yu very happy. By the weekend, Su Yu had accumulated five general skill points.

Without much hesitation, Su Yu followed the original plan and increased his spells, dark magic, and defense to LV7.

At this point, Su Yu's magic power, spells, black magic, and defense skills had all reached LV7, significantly increasing his personal combat strength.

Previously unthinkable techniques like brain lockout and mind control have now been mastered. The raven formed by the Guardian Charm has become larger and more solid, with a wingspan of about 1.5 meters.

On the dark magic side, Su Yu has already mastered the Fiendfyre, Cruciatus Curse, and Imperius Curse. As for the Big Melon Curse, this curse requires a strong killing intent towards someone and damages one's own soul, so Su Yu does not intend to try it lightly.

Su Yu took some time to visit the House of Requirement and tested his actual combat strength. He believed he could reach or even surpass the level of an ordinary Auror.

With one general skill point remaining, and no longer in such urgent need, Su Yu decided to pause allocating the skill point and save it as a reserve.

On weekends, students do not have to attend classes. Children in the third grade and above can go to Hogsmeade Village with their parents' signed consent.

According to the book "Magical Historic Relics" in the Hogwarts School Library, this place was also the headquarters of the 1612 goblin rebellion.

Su Yu could naturally come to this village as well, but unlike the other students who were shopping, Su Yu had a different purpose for coming here.

Thanks to the skill points allocated to other areas, Su Yu made significant progress in alchemy.

He felt that it wouldn't be long before he could streamline and mass-produce the manufacturing process of the magic phone. He needed to establish a magic phone factory and store in Hogsmeade Village for subsequent manufacturing and sales.

Su Yu wandered around the village, looking for a suitable house to build a factory, and also learned about the wage levels of the village's wizards and fairies.

In Su Yu's memory, Hogsmeade in the movie was very small, with only a few shops, but the reality was completely different. It was home to thousands of wizards, as well as a number of goblins.

As the former stronghold of the fairy rebellion, although the rebellion failed, the fairies still occupy a considerable share of assets here. Several shops that Su Yu had his eye on were under the names of fairies.

Fairies are notoriously greedy, making negotiations quite difficult. Fortunately, Su Yu's research was not yet fully successful, so there was no rush.

Arriving at the Three Broomsticks bar, Su Yu was about to have a couple of drinks when he suddenly spotted a familiar face: Tonks, with his striking sapphire blue hair.

Even though she looked slightly different today, the familiar feeling still allowed Su Yu to recognize her at a glance in the crowd.

"Hey, beautiful, can I buy you a drink?" Su Yu patted Tonks on the shoulder from behind and said in a slightly flirtatious tone.

Tonks instinctively turned and back, assuming a defensive stance, and reached for his wand, ready to knock out any ill-intentioned individual at any moment.

Seeing her reaction, Su Yu took a step back, raised his hands, and said, "Don't be like that, Tonks. Have you forgotten me so quickly?"

Upon seeing Su Yu, Tonks' expression immediately changed, and his hair instantly turned a girlish pink: "Su, it really is you! What are you doing here?"

“You’ve forgotten, I’m a professor at Hogwarts. It’s the weekend, so it’s perfectly normal for me to be here. On the contrary, it seems you shouldn’t be here at all,” Su Yu retorted.

Tonks looked around, pulled Su Yu to a corner, and whispered, "A dragon egg has gone missing from the Norwegian Dragon Conservation Area. Current information indicates that the dark wizard who committed the crime has fled to Hogsmeade Village."

Su Yu raised an eyebrow and painstakingly pieced together his hazy and chaotic memories. Finally, he remembered that in the original story, Hagrid had won a Norwegian Ridgeback Dragon egg at a bar during the first semester.

If that's the case, then based on the information Tonks provided, it's highly likely that Quirrell was behind it.

No, no, Quirrell has been at Hogwarts for the past week, so it's impossible for him to have gone to Norway to steal the dragon egg. But it's also possible that Quirrell was the mastermind, hiring a dark wizard to do it and then completing the transaction at Hogsmeade.

And all of this must be orchestrated by Voldemort, the final boss. It would be quite dangerous for a greenhorn like Tonks to investigate this matter.

"Did you come alone?" Su Yu asked.

“No, it was me and our captain Kingsley. But you know, I’m Magus in disguise. The captain told me to come to the bar to check if there were any suspicious people,” Tonks answered truthfully.

Su Yu's face darkened after hearing this, and he asked, "So you were actually an undercover agent here?"

"I guess so!" Tonks blinked her beautiful, large eyes and nodded.

Su Yu pointed at Tonks' hair: "You're an undercover agent, why are you dressed so flamboyantly? Are you afraid the bad guys won't notice you?"

"I've changed my appearance, they won't recognize me. There are all sorts of strange people in the wizarding world! Nobody will pay attention to me!" Tonks said confidently.

Upon closer reflection, what the girl said seemed to make some sense. Su Yu took out a pendant from his pocket: "Here, let me put it on you."

"Ah...so...so suddenly? I...I...I haven't agreed to you yet..." Seeing Su Yu suddenly about to put the necklace on him, Tonks' hair turned fiery red in an instant, and he stammered incoherently.

Su Yu glared at her: "What are you thinking? This is an alchemical tool that can automatically activate a 360-degree iron armor for protection. I'm just lending it to you."