Rhine took the suitcase and placed it at the foot of the table.

It's all filled with materials for making flying machines, and if all of them are successful, it's more than enough to make ten.

To this end, Rhine spent all his savings, even the tuition fees that he had just received from Hermione.

Now, Rhine has successfully returned to the pre-liberation period, and there is not a single gold galleon left in his pocket, only three silver sicos.

However, as long as you can make the aircraft, it is worth it.

Flying machines, that's an artifact that attracts students.

Rhein thought that as long as more students were interested in magical technology, the speed at which he would gain influence would be faster, and it would no longer be difficult to obtain technology points.

In Hogwarts, there are nearly 1,000 students from home and abroad, and if each person contributes 3 points every month, it will be 3,000 points.

Of course, this is just a fantasy, and there is hardly any elective course that can cover all students.

Hermione, who was sitting behind the round table, glanced at the suitcase and said with great interest, "Professor Embers, do you have a new invention?" I just saw you write spells in your notebook that I've never seen before. ”

Rhine took off his coat and said, "Of course, this is another happy event today, and I have a new inspiration. ”

After thinking about it, he said to the two young wizards, "Harry, Hermione, I think it's time for the two of you to finish your pre-school tuition. As you know, there are five days left before school starts, and you and I need to prepare for the start of school. ”

Hermione's face suddenly fell, she thought she could study here all the time, and then get on the train to Hogwarts with the professor when school started.

"Professor, I don't really have to prepare anything, I can stay here and help you." Hermione pursed her lips, trying to convince Rhein that she felt she still had a lot to learn.

Harry echoed Hermione, "Professor, I don't have to prepare anything, I'm staying at Mr. Weasley's house now, and I can come over every day through Floo Powder." ”

Rhine looked at the two reluctant little wizards and suddenly felt a little relieved.

It turns out that this is the feeling of being a teacher.

However, he still shook his wand with a serious face, and said in an unquestioning tone: "Your life is not only about studying, use the remaining five days to spend time with your family and friends, and relax before school starts." ”

As soon as Hermione and Harry looked at Rhein's serious expression, they knew it must be no fun.

Especially Hermione, the little witch reluctantly packed her things.

After Harry disappeared into the blue flames, Rhein sent Hermione to the Broken Axe Bar, where she was picked up by the Grangers.

In the past two days, the Granger couple's attitude towards the Rhine has improved a lot.

It may also be because of familiarity, they can see through the massive drafts and notes that Hermione brings home every day, and Rhine is really serious about teaching knowledge.

Moreover, the fact that their daughter is so valued by the professors at the school also makes them very proud, and they unknowingly develop trust in Rhineland.

After greeting Rhein cordially, the Granger couple took Hermione and left the Broken Axe Bar.

Rhine, on the other hand, is back in the Enbers Magic Shop.

Next, it's time to start preparing for the start of Hogwarts.

Rhine took out his wand and waved it back and forth in the room, and with the sound of a rattle, the diary and scratch paper were all stacked neatly on their own, and the table top was cleaned.

Immediately after, the tip of the wand was aimed at the suitcase, which suddenly opened, and some of the materials inside flew out and sat in rows on the table top of the round table.

According to the knowledge in his head, Rheinland first polished the important parts out of steel.

Then, in the inner core of ten of the parts, the feathers of magical beasts were added.

Finally, the engraving is done one by one until all the parts are made.

Even if he was very skilled because of his memory, this complicated process consumed a lot of Rheinland's time.

By the time Rhine had assembled the shape of the aircraft and added the last part, fluorescent, to the middle, it was already bright outside the window.

The shape of the aircraft is very similar to a skateboard, which looks like a "figure-8" board, with some high-tech crevices on the surface.

Therefore, Rheinland gave it a very simple name - flyboard.

This time, Rhine did not follow the rules, but made some modifications according to the original spell.

On the edge of the flyboard, he added a circle of neon lights that were connected to the conversion device in the middle and could be lit by mana.

And, like flyboards, they can change color and brightness through a controller.

These red lights, lit by mana, remain in the air for a short period of time as they move.

According to the Rheinland's conception, it will form a cool "tail".

This will increase the appeal of the flyboard to the little wizards, who love the novelty.

In the middle of the flyboard, the narrowest part of the connection, is the changer. There is a lid there, and when opened, there will be a groove.

That's where the only consumable material is placed, which is a glowing stone called fluorescent.

If you want to self-cycle to generate mana, you have to have this, otherwise the flyboard will not work.

Veins of fluorescent stone are not rare, but until now, wizards have not discovered any other uses for it than decoration.

Perhaps, after the popularization of flyboards, the price of fluorescent stone will rise.

Rhein put the electronic blue bracelet on the wrist of his right hand and clicked the round button in the middle.

Suddenly, something came into consciousness.

At this point, the flyboard seems to be transformed into an extra limb.

Rhine controlled this new "limb" with his mind, and his brain gave instructions to move, and the flyboard suddenly circled around the room according to Rhine's thoughts.

Immediately afterwards, Rhine turned on the neon sign of the flyboard with his mind, and there was an instant colorful trail behind the flyboard.

After circling for a moment, the flyboard sprinted straight at Rhine's feet.

Rhein seized the opportunity and jumped lightly, just stepping on the flyboard.

With a "click" sound, two safety buckles locked Rhine's ankles.

Although Rhein's grades were poor, on the contrary, he was very good at riding a broomstick and worked as a batsman and seeker at school.

So, Rhine didn't panic at all, he controlled the flyboard to rise, and then forward.

"Bang!"

But the next moment, Rhine fell directly backwards because of poor control.

Flyboards and broomsticks, after all, are different structures, and their experience is not the same.

Since the flyboard does not fall when it is reversed, it causes Rhine to rotate 180 degrees directly with his legs as the axis.

His back hit the edge of the table, and the material was scattered all over the floor.

"Shhh...... Ahem, the beginner difficulty of this thing is not lower than that of a broomstick. ”

After a while, Rhine got used to the flyboard controls and was able to fly slowly and steadily.

Although the difficulty is quite high, the comfort and safety are obvious.

If the energy is produced by then, the flying broom is afraid that it will become the tears of the times.

At that time, broomsticks will only exist for Quidditch.

After practicing for a while, Rhine was so sleepy that he cleaned up the house with his wand, and then fell asleep on the bed for a few hours.

It was already noon when he woke up, and he had a quick bite to eat.

He then took out his notebook and began writing textbooks for the Hogwarts students.