Super Doctor of the Universe

"Has the situation gotten so bad? Aurors have openly entered Hogwarts and guarded the main passages. Even Professor Dumbledore has asked us to be vigilant." On the way back to the dormitory, Hermione couldn't help but say to Ron.

Ron nodded and said, "You know the lake outside Hogwarts, the small lake that first-year students have to cross by boat. I heard that even the mermaids in the lake are armed."

"Who came up with the idea of ​​letting mermaids guard?" Harry Potter smiled and said, "I think it must be Hagrid. Only he cares about those mermaids. Others don't think of this at all."

Hogwarts is a castle. The north is backed by the natural barrier of the Forbidden Forest, the east is the stone bridge leading to Hodmog, and the south and west are surrounded by lakes.

These mermaids living in the lake are said to have been here when Hogwarts was founded. The four founders at that time had an oath with the mermaids to allow mermaids to reproduce and thrive in the lake. Hogwarts will provide them with protection, but when needed, the mermaids are also obliged to protect Hogwarts.

It's just that after so many years, Hogwarts has never fallen, and the mermaids have never fulfilled the agreement.

"It doesn't matter who came up with the idea. What's important is that Dumbledore would not have allowed the mermaids to get involved if the situation hadn't been irreversible. Harry, haven't you noticed that under the calm surface, the potential confrontation has already begun."

Hermione is the brain trust of the trio, and is usually the first to see the situation clearly, but their strength is far from enough. Not to mention Voldemort, even the senior Death Eaters are not something they can fight against, so even if they know the undercurrent is surging, they can't do anything.

It is precisely because of their more experience that the three people do not have the arrogant attitude of the young people at this age, but instead have a feeling of powerlessness.

"Don't think about it, Professor Dumbledore must have a way." Harry can only say this.

Hermione also nodded slightly and said softly: "Yes, for example, these Aurors, the mermaids in the lake, and the newly invited Professor Slar Ghorn and Professor Link Bennett. I heard that he will have a class tomorrow."

Unlike the students and professors who have their own thoughts, Link is in the library at this time, concentrating on studying various magic books collected by the Hogwarts Library.

From the records in the library, Link also roughly knows the origin of wizards in this world.

Unlike the history of the outside world where there are no wizards, the relevant magic books record the history of magic.

In ancient times, the goblins, who were rare in number but mastered magic, ruled the whole world. Humans were just slaves of goblins at that time, and the house elves now are servants of goblins.

But a small number of goblins also made this attempt and chose humans as their happy partners. The first batch of wizards born were all hybrids of humans, goblins or elves.

Under the aggressiveness of human genes, the fetuses born are also humans.

At first, the goblins did not notice this change. Because of their low reproductive ability, they even raised these mixed-blood babies as their own and taught them goblin magic.

But soon, the goblins felt something was wrong. Goblins can live for an average of 500 years, and usually only have two or three children born in their lifetime, but these mixed-blood children can reproduce the next generation after more than ten years.

When the goblins began to be alert, the number of mixed-blood humans with magical physiques and who had learned magic was several times that of goblins.

So, the first wizard war began.

The result of this war is unknown, but based on the fact that goblins are still there and have rights, it should be that goblins have a slight advantage, but because of population factors, they do not want to over-consume themselves and have to compromise.

The second wizard war was a hundred years later, when human wizards and goblin servants, house elves, went to war. From then on, the elves changed from servants of goblins to servants of wizards.

After these two wars, wizards established their dominance, drove away goblins, and enslaved house elves.

After that, the goblins rebelled many times, but unfortunately they never succeeded.

The most recent one was in 1752, when the goblins united with werewolves, centaurs, and giants to launch a joint rebellion in many places.

The war lasted for six years, and finally ended with the werewolves being suppressed, the centaurs being driven into the Forbidden Forest of Hogwarts, and the giants fleeing in all directions.

The goblins also suffered heavy casualties in this rebellion. Most of them retreated to Switzerland, and a small number stayed in England. They have not recovered yet.

From these records, it can be seen that the so-called wizard qualifications in this world are the blood inheritance of magical creatures. This record also gave Link an idea about the remaining goblins in this world.

At the same time, Link also guessed that this world was probably the same as the Pirates of the Caribbean world. It was originally a world where magic prevailed, but with the passage of time, the mystery gradually dissipated, and technology prevailed.

However, in this world now, various magical races are still left, and they are the greatest wealth of the entire magic world in Link's eyes.

"Now that these magical races are few in number, my demiplane should be able to accommodate them. In that case, don't be polite." Link thought, and used the communicator to give Christina a big order...

The next morning, Link appeared in class. As for the content of the class, he had already thought about it, which was alchemy from the world of Fullmetal Alchemist.

It has been many years since Link acquired the alchemy from the world of Fullmetal Alchemist. With his steadily increasing spiritual power and deep knowledge accumulation, he has gradually embarked on his ideal path from the beginning of specializing in steel alchemy.

Now Link can easily mobilize and combine different molecules to form various substances by performing alchemy.

But so far, Link still cannot decompose molecules into atoms and then combine them. After all, this is an essential change.

To do this, he can only try it after calling the power of rules in the small world or after Link enters the legendary realm.

However, in the world of Pirates of the Caribbean, Link also successfully made some philosopher's stones, all of which were made from death row prisoners based on the principle of waste utilization.

This kind of thing can break the law of equivalent exchange when used, or the philosopher's stone is used to replace equivalent exchange.

The alchemy in the world of Fullmetal Alchemist is somewhat different from the alchemy in the traditional magic world in concept, and is closer to the concept of modern technology. Moreover, Link mainly teaches steel alchemy, so Link named it modern instrument alchemy.

As for how many students can learn in such a short time, it is not what Link cares about. He is not really here to be a professor. He just wants to get more information about the wizarding world to pave the way for the final action.