Early in the morning, on an island near the main island of the Rainbow Tower.

In the center of the island is a large lake, around which a steam train runs around the island, and on one side of the lake is a quaint three-story building.

This is the headquarters of the Mercury Balance, and on the other side of the building is a villa area with a view of the lake, where the high-ranking mages and resident staff of the Mercury Balance live.

Frederick on vacation. Dmitry had just sent off his daughter, the lovely little girl who was a freshman at the Rainbow Tower's High School of Magic.

The final exams came as scheduled, and the little girl was quite nervous, which may have been made even more stressful by the fact that her father was still a famous high-level mage of the Nine Rings, and she was slightly uneasy to get on the train around the island and go to the school on the main island, hoping to get a good result today.

Dmitry breathed a sigh of relief, his daughter Misha is obviously not the type that is good at magic, although she has her own bloodline, she can master magic much faster than her peers, and it is relatively easy to enter the high-level magic academy of the Rainbow Tower, but it is still very difficult to advance with the goal of becoming a high-level mage.

Dmitry has lived for more than two hundred years, and he is not young among high-level mages, but for middle-level and low-level mages, two hundred years may already be the inheritance history of a family, if Misha can't enter the middle level, maybe many years later, Dmitry will have to face the scene of his daughter's funeral.

Shaking his head, he still didn't think about these things, and when he returned to the house, he found that his wife had woken up.

"Olya, why did you wake up so early?"

Dmitry said as he opened the refrigerator, which had been kept at a constant low temperature by the thermostat circle, took out a bottle of milk and put it in the pot to heat, and on the other side, controlled the pan with the mage's hand, cooking bacon and omelette.

"Has my daughter been sent to school?"

Dmitry's wife, Olya, still looks charming, her spell rank is the third ring, she is only a low-level mage, as for the process of the two meeting is legendary, and now, for twenty years, the two of them have been a model couple in the mage world.

"Well, sit down, breakfast will be ready soon."

After a few minutes, Dmitry took control of the pan, put the fried bacon on his wife's plate, and poured another glass of warm warm milk.

"Thank you, dear."

Olya has a slight hypoglycemia and often feels sleepy in the morning, which is why Dmitry has developed a habit of waking up early to prepare everything for his wife and daughter.

Anyway, for high-level mages, sleep is not really necessary, and there is no essential difference between waking up early and waking up late for the body.

"Misha seems to be very worried about the exam, hoping that she can overcome her mental obstacles."

Olya took a sip of the hot milk, the slightly sweet milk running down her throat and into her stomach, making her feel a little refreshed.

"It's something she needs to go through anyway."

Dmitry said, and he also picked up his coffee, and at the same time, the mage's hand took the newspaper he had just picked up from the mailbox at the door and opened it.

"Well, the temperature has been really high lately, and it seems that the mages need artificial rain again."

Seeing the report about the weather, Dmitry sighed and turned to the next page.

At this moment, as if with a premonition, he looked at the window on one side, and saw a small black dot slowly flying towards him, it was an owl, with a black and white pattern, it was his old buddy.

The owl flew towards the house in such a faint way that it was about to fly straight into the room.

Bang –

But it hit the glass straight away, its wings spread out, and its whole body was attached to the window, looking extremely embarrassed.

Dmitry grabbed a handful of cereal, came to the window, raised it, sprinkled it in a bowl and handed it to the owl.

"You'll have to slow down next time."

With that, Dmitry picked up the parcel that had fallen on the windowsill and opened it, only to find that it was a paper and a letter.

The person who wrote was Eagles. Field.

Dmitry opened the letter first, and the content was very brief, this is Reiner. Ian Gray's latest paper submitted to the High Council, which Field had read, considered it controversial and had to disturb Dmitry, who was still on leave.

"This paper discusses the problem of the speed of light, and it's so bizarre that I think so many years of magical research seem to be based on a false benchmark...... Is it really that serious? ”

Dmitry suddenly became serious, the speed of light calculated by the Newington-Holland equations has an irreconcilable contradiction with the classical system of motion, and since the publication of the Honourable Alberton's paper on time and space, this contradiction has reached its peak, and there is a great deal of opposition between the wave theory of light and the theory of particles in the past.

It's just that, in the past, whether light was a wave or a particle, it didn't affect most of the basic laws, but now, the speed of light problem challenges the most fundamental thing for all mages.

"What's the matter, my dear, it's work?"

Olya asked, when she saw Dmitry read the letter, and was silent.

"It was a letter from Eagles, and he asked me to look at this paper, well, Reiner. Ian Gray's latest paper. ”

Dmitry waved a stack of parchment in his hand.

"He's made a new discovery?"

Naturally, Olya also knew about Reiner, a new star who often appeared in her husband's mouth, and even Dmitry once said that Reiner might be able to promote a real second magic revolution and completely separate ancient magic from modern magic, so Olya was naturally pleasantly surprised to hear that he had a new thesis.

"To be precise, his paper seems to have solved a problem that plagued the mages, and I have to read the paper first...... Uh, I can watch it again in the afternoon. ”

Dmitry suddenly realized that he was on vacation, that this was a rare time to spend with his family, and that he should not discuss things at work.

"It's okay, you can go."

However, Olya smiled slightly, signaling Dmitry not to think too much about himself.

"If you don't see it, I'm afraid you'll be restless all day."

"Haha, how can this be ......"

Dmitry laughed dryly, looked at his wife, and finally opened the paper and walked to the living room as he spread it out.

The title of the paper is quite meaningful: "On the Electrodynamics of Moving Bodies", which seems to discuss the problem of the speed of light from the theory of electromagnetic fields.

And his wife, Olya, smiled slightly, and silently stood up to clean up the dishes.