"Your invention is only limited to self-entertainment, unless you can break this shackle and invent something that can change people's lives and benefit people, you may attract her attention."

Otto frowned in contemplation, obviously he didn't understand this sentence well enough.

"It's okay to do the best in a certain field, and when you make a great contribution to human development, you should also be counted." Yae Ji continued to flicker: "I went to the Isis District first this time, and after getting the certificate, I went to the Valkyrie Eastern General Military Region, how long did it take?" ”

Otto's eyes were a little confused, and he said, "Your speed is fast." ”

"Yes!" Seeing that Otto had already entered the trap, Yae Ji simply pulled him to sit down again.

"It's too slow for me! Slow to the extreme, there was a lot of time to do other things, but it was all wasted on the road! If ordinary people had set out with me, they might not have arrived at the Eastern General Military Region yet. ”

Otto understood it with a little bit, and said excitedly: "Are you telling me to change the efficiency of travel?" ”

Yae Ji looked like a son of a child, his arms were put to the sides, Erlang's legs were crossed, and he sat on the sofa in a big guy sitting posture.

"Tell me what you think." ”

Otto pondered, "Changing the carriage? Bringing in good horses? ”

Yae Ji is full of black lines, and even if Otto is a "waste" in the Apokalis family, this "waste" is many times better than the lives of ordinary people.

This is similar to the rich second generation in the era of science and technology who want to find true love, so he replaced the sports car with a BMW 5 series, and replaced the villa with a two-hundred-square-meter duplex suite in the city center, because in his opinion, no matter how poor a person is, it is like this.

Otto is a prime example of this asymmetrical information.

"Ordinary people go out and buy horses and carriages?" Yaeji asked rhetorically.

"Can't they rent it?" Otto asked cautiously.

"Rent? Who would dare to rent to them? Where does the deposit come from? Aren't you afraid of black eating black? ”

Otto blinked, and it seemed that things were more complicated than he had imagined.

Yae Ji sighed, changed from the big guy's sitting position to a normal sitting position, and said bitterly: "What did I tell you just now?" Be flexible with your brain, your invention! If you invent a means of transportation that can run faster than horse-drawn carriages and have much lower transportation costs than horse-drawn carriages, and can smoothly promote it, wouldn't that contribute to human progress? ”

Otto was stunned, although what the teacher said was a bit mysterious, and he had never heard some terms, but after thinking about it carefully, he could still understand the general meaning.

"But, what can I invent to replace a carriage? Mechanical horses? ”

"Slap~" Yae Ji slapped his forehead, took out a small piece of light green energy crystals from his backpack, and crushed the armrest of the chair next to him, and used his strength to increase his grip strength, and pinched out a round ball.

Placed on the table.

Motioned: "You push and see." ”

Otto didn't understand what it meant, but he did it.

The first is a cube-shaped green energy crystal, stretching out your finger and pushing forward.

There's a lot of resistance, and it's hard to roll.

Otto glanced at Yaeji, who pointed to the relatively sleek ball, after all, with his grip strength, he still couldn't hold a perfect ball without flaws.

Otto stretched out his hand and poked, and the ball rolled from the table to the ground "dripping", so fast and efficient, abusing the cube!

Seeing Otto's expression of sudden realization, Yae Ji was deeply pleased, so he asked, "Do you understand?" ”

"Teacher! You're trying to tell me that you can only go farther if you smooth out the edges and corners, but you can't go too sleek, otherwise you will roll a snowball down the hillside and eventually into the endless abyss. ”

Otto looked at Yaeji with starry eyes, his eyes full of adoration.

【With Philosopher】

"Mobile phone" complained, and Yae Ji agreed with its words very much this time.

"Smack~"!

This time, Yae Ji snorted on the back of Otto's head!

Otto was stunned, could there be a deeper mystery in this? What a teacher!

"I just want to tell you that the ball is faster!"

Otto was stunned at first, then looked at the only remaining cube on the table, recalled what he had just said about "carriage" and the like, and immediately reacted.

"The road is simple, and the teacher deserves to be a teacher."

Yae Ji was speechless, he found that it was not a good thing to be too smart, and being smart was mistaken by being smart.

【Yang Xiu】

Ignoring the "mobile phone", Yae Ji took a deep breath, looked at Otto, and thought to himself, how could this kid be an inventor, how could he develop in the direction of an artist and a philosopher?

At the moment, he was not "instructing" Otto, but directly picked it out, and explained to him about the steam engine through the story.

Otto combined the previous stories, and this time he made it to the point, and successively told the steam train, the steam locomotive, the steam ship, the steam plane......

"Forget about the steam plane!" The eightfold Ji point is up, leaving enough room for Otto's imagination, just saying that he saw it in a certain ruin of the last civilization......

Otto was itching and didn't care about his goddess anymore, constructing the principle of the steam engine in his mind, and thinking about how the steam engine drove the behemoths......

Yae Ji only revealed some information, these things are very good in the giant world, and Otto has a foundation, bring him out, and don't ask about things himself, how good.

If you really want to make these things, the stakes involved are very large, and it is safer to pull the Apokalis family on the ship.

The experience that the world of giants offers Yaeji is much more than that.

Yaeji's small abacus in his heart snapped, and he took Otto, who was still addicted to steam, all the way to the mansion of the envoy of the Siti district.

Otto actually didn't want to go, the teacher had just said that steam was such an interesting thing, and he wanted to go to the metallurgical department in the Siti district now......

"Okay, don't think about it so much yet, go to the study to read a book, and call you when we have dinner." Yaeji, who came to the living room, patted Otto on the shoulder and brought him back to his senses.

As soon as Otto looked up, he was attracted by the mysterious eyes that contained a smile and seemed to be the color of Honkai. He remembers that day...... The eyes of the same color are exactly the same as the teacher's......

Yae Ji patted Otto again, and Otto came back to his senses.

Seeing Yae Ji leave, Otto walked to the inside of the study in a dejected state.

The white hair of the Kaslana family also looks like Karen when she grows up.

But those strange eyes hit his heart.

Otto sat in his chair, covered his heart with one hand, and thought, "I don't feel that way when I see the teacher and Karen alone." This—this is not an evil thought!"

"Teacher's sister...... If the steam engine is developed...... No, if you want to learn to avoid risks, then choose another one? ”

"If only I could be strong......"

Otto was slightly stunned, and suddenly thought of the sacred relics enshrined in the family sanctuary, the relics......