Outside Thunder City.

Roman Sagan Mage Tower.

"Teacher, your dinner." Tessa walked into the familiar study with a dinner plate.

Roman shifted his body in the gray back chair, most of his body hidden in the shadows of the setting sun, so that Tessa didn't see it when she first entered.

"Another day has passed." The ninety-six-year-old old magister suddenly sighed.

Whether it is strength or thinking, the Magister can be described as unfathomable, but Tessa, who has been with Roman for more than ten years and is deeply loved, can understand a little bit of the teacher's mind. The sadness of the passage of time is seriously inconsistent with the temperament of the "storm guide", and the teacher has this kind of emotion, obviously still sad about the matter of accepting apprentices.

Principus didn't meet the requirements.

But it's the only option at the moment.

She really can't share the teacher's worries about this kind of thing.

"How about you go today?" Roman smoked his pipe, ignoring the food on the table.

"His Excellency Donald Gall and Príncip's father asked me to convey my respects to you......"

"Getting to the point." Roman interrupted his disciple and said dissatisfied.

Tessa smiled, "The point is, that magic windmill is not bad. ”

As the final assessment of Princeis, Roman Sagan did not personally come forward to inspect the magic windmill, but asked his disciple Tessa to accept it on his behalf, which further strengthened the idea of Donald and others - the magic windmill was just a formality, and Roman Sagan had already made a decision in his heart.

"Where's the good?" Roman asked, leaning back in his chair and closing his eyes.

"The best thing is the wind direction guiding the magic array, which is said to have been done by Printhis independently, and secondly, the overall structure is very attentive, logical and organized."

"Is Donald involved?"

"His Excellency Garr admits to having done a final check, but has not proposed any amendments."

"Hmm." Roman bowed slightly: "Is there anything lacking?" ”

"If I have to say that it is insufficient, the windmill style is more traditional, and the appearance is not very good-looking." Tessa said seriously.

Roman finally reacted, sat up straight from the back chair, slammed his pipe on the expensive table, and said angrily: "Is this a problem with the windmill, or is your aesthetic gradually going against the public?" ”

"It's not pretty." Tessa, who deliberately livened up the atmosphere, stuck out her tongue.

Roman shook his head helplessly.

"So, on the whole, what do you think of Printhias?"

Tessa pondered for a moment: "The teacher's vision is very accurate. ”

Roman sighed: "Since it has been decided, there is no need to hesitate, inform Principis tomorrow and let him come to see me in the magic tower." ”

"Yes."

Tessa bowed her head and said, "By the way, teacher, Principus has sent all the design manuscripts of the magic windmill to the door of the study, do you want to move it in?" ”

"How many?" Roman's eyes were already on the plate.

"The two big boxes are all gray finch paper, which is estimated to be more expensive than the cost of the windmill itself." Tessa smiled.

"Forget it, don't look at it." Roman shook his head and picked up a sausage.

"Then you take your time." Tessa finished speaking and walked away slowly.

Roman had lost his appetite when he looked at the juicy potato cubes next to him.

At his age, he can eat meat at every meal, which is already very good, the magician is good at mental power, and there is no physical advantage, and the reason for his longevity is nothing more than special magic methods such as some potions.

Even so, in the eyes of those 100-year-old elves and other races, humans still die too quickly.

Roman put the plate in the corner of the table, picked up the pipe and put it in his mouth, Meimei took a few puffs, picked up a book with a red cover in his hand, opened it and began to read.

However, after only a few glances, he closed the book again.

Roman found himself anxious for the first time in nearly a hundred years, and at the same time he was troubled, but also a little fresh.

He leaned back in his chair and smoked intently.

Suddenly, as if remembering something, his eyes looked at the door of the study.

In the flickering candle flame, the door was windless and automatic, and it opened with a breath, but it stopped to the maximum angle with great precision, and did not make any sound.

Roman spat out a puff of smoke and shot out the door.

The smoke ring, which was only the size of a coin at the exit, quickly grew larger, and by the time it reached the door, it was already half a person tall.

The smoke ring split in two and disappeared into the darkness outside the door.

The next moment, two heavy wooden boxes actually floated into the study, and when you looked closely, the two smoke rings seemed to bind the boxes like ropes, and then an invisible giant carried them in one by one.

Roman waved his hand casually, and the lid of the wooden box was lifted, and the manuscripts inside floated obediently to the desk, and finally stacked in front of Roman.

The thin and long fingers took the first piece of paper, and only one line of large characters was seen: the general design of the windmill.

Below is an elevation of a windmill.

Roman took the second one, which was a side, top view, etc. of the windmill.

After taking a few cards in a row, I finally started the formal magic design part.

Roman held his pipe in one hand and handed over the manuscript in the other, nodding and sighing in silence.

It took less than half an hour to read a whole box of manuscripts in one sitting.

Roman hesitated to look at the other wooden box, but finally did the same, and pulled the manuscript out.

The last rays of light outside the tower also disappeared into the night, and the moment the study fell into darkness, a gem lit up in the middle of the ceiling, although it was only the size of a thumb's belly, but it illuminated the whole study as bright as day.

It took Roman less time than before, and Roman had almost finished reading the box of manuscripts, and when the last stack was left, he got up and poured himself a glass of water.

After sitting back in the back chair, I picked up a manuscript.

"About the Magic Design of the Bearing Part of the Wind Wheel".

"You can't use white beech wood, so I'll use magic patterns instead."

After reading the title, you already know the approximately.

Roman quickly flipped through the pages, intending to skip the parts he had anticipated, only to find that the handwriting was extraordinarily small, as if the writer was reluctant to write the paper.

Remembering the lavish splendor of the previous design section, Roman was a little curious about this paper-saving writer.

He brought the manuscript closer to make it clearer, and saw that the opening reads: "If the vertices of the hexagram are recorded as a~f (as shown in the figure below), the regular triangle ace is the main S-frame, and the inverted triangle bdf is the sub-G frame, and the total range is 12ab, because the 75F surface domain is parallel to the α surface domain (the result is proved on pages 15~19 of this chapter), then, the Φ(s) identity is at ......"

When reading this, Roman's brows couldn't help but furrow, and he quickly turned to page 15: "Regarding the proof process that the 75F surface domain is parallel to the α surface domain, that is, the cut double-loop regression counting check template for the Φ(s) identity: according to Euberne Finley's formula (hereinafter referred to as [UF]), it is known that LP(n+1) is ...... in the positive part of the aeta function"

The more Roman looked at it, the more his brow furrowed, and at last he even put his pipe on the table, held two pages of manuscript in each hand, looked at it a few times, put down his thoughts for a moment, and then picked it up and continued to read.

It can be seen that the set Z(U) is in the strong convergence characteristic according to [UF...... The basic logic of the third layer module: in the positive value of the non-stretch mapping arc, there are infinite pairs of regression counts constant tendency α surface (proof is omitted), and the ...... can be obtained in summary."

"Smack!"

Roman slapped the manuscript and palm together on the precious desk made of yellow artemisia wood, and a vague aura emanated from the contact between the palm and the tabletop, and in his sight, the bookshelves, books, tables and chairs, all the objects quickly twisted along an indescribable curve.

But the next moment, everything was back to normal.

"Proof omitted! What a proof to omit! ”

……

Tessa finished bathing, changed into pajamas and was about to go to bed, when she suddenly noticed a vibration coming from all directions, but it only disappeared for a moment.

She held her breath and waited for a few more moments, finding no signs.

Thinking that the teacher's study was two floors up, I immediately relaxed and continued to sleep.

……

Early morning.

Tessa, as usual, got up and washed up, and brought the breakfast prepared by the servant to Roman Sagan's study, knowing that the teacher would leave the bedroom before six o'clock every day.

"Teacher, your ......"

As soon as I opened the door, I froze instantly.

The smoke was so thick that she could barely see the way, and the pungent smell of tobacco made Tessa cough twice.

She waved her hand to dispel the smoke, walked all the way to her desk, put her plate down, and immediately walked to the window and opened the arched window.

"Have you been here all night?"

Tessa looked at Roman Sagan in the back chair in surprise, as if she hadn't changed her sitting position all night.

Roman was still holding his pipe, ignoring his disciple's inquiry, and waited until Tessa approached with some concern, before suddenly saying:

"Ready, let's go to the Hall Academy of Magic."