My physics masters couldn't possibly be grand mages.

"yawn!"

Upon arriving at the villa, Einstein sneezed.

Char walked to the fireplace, used the fire tongs to put in a few pieces of firewood, and then lit them with his Burning Hand.

The blazing flames dispelled the chill they had felt along the way, and the crackling white noise soothed their minds.

"Was that person a sixth-tier member of the Tower of Truth?" Xia asked.

Einstein sat down on the sofa.

"We always have to face this, and we were mentally prepared for it before we even decided to enter the Tower of Truth, weren't we?"

Xia stared at the flames in the fireplace, silent, as if he wanted to say something.

"Ding-dong! Ding-dong!"

The series of soft beeping sounds caught his attention.

He channeled his consciousness into the badge and saw the number "120" in his points account. He suddenly stood up and looked excitedly at Einstein and Tesla.

"I have enough points!"

"So many people buying all at once?" Einstein was somewhat surprised; only two people had bought anything when they came out of the library. "Who could it be?"

"I don't know, but who cares?" Xia said nonchalantly. "Since it's been handed in, there's no need to worry about them learning it."

He had no idea that behind those points lay the blood and tears of an entire research team.

Those people spent countless nights in the lab, only to have their entire theories overturned by a second-year student using the word "oxygen."

However, this kind of thing will happen many more times in the future.

Because everyone around Char in the future will be a game-changer for this world.

The purchased 3D projector could only be viewed by one person, so Char transferred all his points to Einstein.

"Why don't you buy the Fireball spell and take a look?"

Without much hesitation, Einstein opened the panel and purchased the Fireball spell.

From Char's perspective, Einstein was sitting on the sofa, his eyes reflecting a strange glow, his eyeballs moving up and down as if he were looking at something.

About several tens of minutes later, he stood up from the sofa and dragged over the blackboard that he had previously used to teach him math.

He picked up the blackboard eraser and wiped the formulas clean, then quickly wrote something on the blackboard with chalk.

It was a tree-like graphic.

Einstein was not good at drawing runes because they were quite complex, so he could only use simple English words instead.

Although not as intuitive as a three-dimensional diagram, a two-dimensional diagram can actually convey a lot of information.

This appears to be a system for encapsulating and delivering energy.

The main principle behind the spell is to use the first rune to convert magic into a high-temperature energy body.

Then, stability and shaping are applied to confine this energy within the sphere before finally releasing it.

However, this delivery is not solely based on "gas manipulation," but primarily utilizes mental power to control magic.

A third-tier archmage's mental energy field can extend to more than twenty meters away.

The acceleration of mental manipulation of magic power and the acceleration of the "gas manipulation" rune can ensure that the fireball is projected at a certain speed to a distance of more than forty meters.

To some extent, this method can even adjust the trajectory, such as making the ballistic trajectory curve around obstacles.

Char carefully examined the English word Einstein had drawn on the blackboard, which read, "Perception".

"Which rune is this?"

"Sixth," Einstein said.

"What exactly is it like?" Tesla asked.

"Its initial ability is to perceive any form of change in the outside world, but after being modified by a special magic circuit, it can automatically trigger the corresponding magic response according to a preset threshold or pattern," Einstein continued.

He raised his hand and pointed to the top of the tree-like structure in front of him. "Look here, in addition to sensing 'impact,' it is also linked to 'stability.'"

The feedback signal after the impact will destabilize the sphere, releasing the energy trapped within it.

"Will our compressed hydrogen-oxygen sphere succeed if we transplant it here?" Xia asked.

"It won't work," Tesla said.

Xia was taken aback.

"The conditional command for this fireball spell can be summarized in one sentence: 'Release the energy within the fireball upon impact.'"

Tesla continued, "The hydrogen and oxygen mixture is a gas, and it dissipates immediately after being released, so it has no destructive power whatsoever."

"So...we bought it for nothing?"

"No, it has already provided enough reference. The rest of the journey is up to us to walk..."

Tesla turned to look at Char, "Let's eat first."

"I'll have something simple tonight: three fried eggs, three pieces of bacon, and a can of milk."

Xia realized what was happening, quickly returned to the fireplace, picked up the notebook that was on top of the fireplace, wrote down some food details and threw it into the fireplace, then tapped it three times with the fire tongs.

It seems that because the meal was simpler, the wait time was shorter than the lamb chops I had last night.

Soon, fried eggs and bacon appeared on the table, sizzling and steaming.

Although points are required everywhere in the Tower of Truth, Char was quite satisfied with the free meals he could order at random.

If you don't strive for improvement, you could lie here for a long time.

Unfortunately, they still have a lot to do.

This is not their true home either.

Dinner was eaten quietly, but not in a dull way.

Einstein ate slowly, chewing each bite carefully, his eyes fixed on the darkening sky outside the window.

Tesla ate very carefully, and after finishing, he would use bread to wipe the sauce off the plate.

Char ate the most, and without any manners whatsoever. He would grab a piece of bacon as soon as it entered his mouth, his cheeks puffed out like a hamster.

"You look like you starved to death in your past life." Tesla looked at him, his tone devoid of malice, more like an observation.

"That's pretty much it for my life," Xia mumbled. "You have no idea what kind of life I had at Imperial College London. I ate toast for two whole years!"

Einstein put down his cup, a smile on his face.

After finishing the meal, Xia cleared the table. The plates could be put back into the fireplace, but the cutlery had to be washed by the cook.

Tesla went to the yard to feed the pigeons.

Einstein sat on the sofa, looked at the diagram of the fireball technique again, and then picked up his violin.

The first note that the bow touches the string is like a drop of water falling into a deep pool.

Char heard this in the kitchen and slowed down his washing of the dishes.

This was actually the first time he had heard Einstein play the violin.

Einstein had mentioned to him that he would play the violin when his thoughts were unclear, so it was clear that there were no problems troubling him these days.

Xia Ya didn't understand classical music, and his limited vocabulary could only describe it as "pleasant to listen to." He read in some biographies that Einstein's violin playing technique was like sawing wood, which now seems like an urban legend.

The sound of the piano flowed from the living room and drifted into the courtyard.

Tesla stood beside the pigeon coop, a crumb of bread in his hand. He heard the music, paused, then placed the crumb on top of the coop, turned, and went back inside.

He didn't interrupt Einstein, but simply leaned against a pillar on the porch and listened.

The song ended.

Einstein put down his violin.

"You did a good job," Tesla said.

"Thanks."

"Easier to understand than your theory of relativity."

Einstein looked up at him and his lips twitched slightly.

"You still don't understand relativity?"

"I don't need to understand," Tesla said as he walked in and sat down opposite him on the sofa. "I just need to know that it's wrong."

Einstein did not respond. He picked up his pipe from the table, put it in his mouth, but did not light it.

Char came out of the kitchen and saw the two old people sitting across a coffee table, their shadows cast on the wall by the firelight from the fireplace.

One has a soft outline, the other has sharp angles.

"What are you doing?" Xia asked.

"I didn't do anything," Einstein said.

"There's a standoff," Tesla said.

Char looked at this and then at that, deciding not to get involved in this silent conflict.

He turned and went upstairs to take a shower and go to bed.

The bathroom is at the end of the second-floor corridor.

It's not big, but it's enough.

The stone bathtub was deep, and hot water flowed from copper pipes in the wall, carrying a sulfurous smell—it was said that there was a natural hot spring in the valley, and the pipes brought it directly there.

Char immersed himself in the water and exhaled a long breath.

He closed his eyes. Normally, his mind would be wandering around at this time, but he was too tired to think about anything or move anything.

He got up early to do all sorts of research and practice, and even spent an afternoon reading books in the library. He had never worked this hard, not even for the college entrance exam.

Forget about exams, compressed hydrogen and oxygen, and the newly emerging sixth order.

We'll talk about it tomorrow.