Different World Card Master: Change the World with Cards

246: Battery?He was naturally puzzled. Usually, he, Zhao Zixuan, and Li Baoyu would learn from Xu Bai together, but why did Xu Bai only call for him? He couldn’t think of a reason, as he didn’t believe he had any particularly outstanding talents.

Xu Bai: ”Do you still remember the toy electric train cards you improved last time?”

Toy electric train?

Fang Mu thought for a moment. Xu Bai hadn’t said anything about the first toy electric train he made. So, was there something different about the second one he made?

”Brother Xu, are you talking about the birthday gift I gave Lele during the training camp, right?”

”Yes.”

The toy electric train cards was Fang Mu’s initial assignment for Xu Bai, considered his first study into electrical product cardss.

Later, during the training camp, wasn’t he researching electric vehicle cardss? Then he suddenly remembered the train he had been fixated on before and tinkered with it.

However, he still hadn’t managed to create a large train, but his research into its power was quite in-depth. He then improved the power and created the toy electric train 2.0 version.

At the time of Xu Le’s birthday, they were all in the training camp and couldn’t think of a gift for Xu Le right away, so they planned to give him one later. After the toy electric train 2.0 version appeared, he decided to give this toy to Xu Le as a birthday present.

However, he gave it directly to Xu Le. Initially, Xu Bai didn’t know and thought it was just the toy electric car he had researched before, with only the exterior paint changed.

Later, when Xu Le was playing with it, he accidentally broke it. Because Xu Le really liked this toy, he brought it over, hoping Xu Bai could fix it.

While Xu Bai was figuring out how to fix the toy, he discovered that this toy electric train not only had a slightly different appearance but also differed greatly internally from what Fang Mu had made before.

However, when he discovered it, it was during the competition phase, so he didn’t question Fang Mu.

Later, too many things happened, so he forgot.

It wasn’t until he returned to the Tianlong Republic that Xu Bai remembered this matter... ”Is there a problem with this?”

Fang Mu still didn’t quite understand. In his opinion, it was just a toy.

”It is indeed just a toy, but the battery used inside this toy of yours is not ordinary.”

Xu Bai highlighted the key point and, without waiting for Fang Mu’s reply, continued.

”You’ve made batteries for electric bicycles. Compare that with the battery in your new toy train. What’s the difference?”

Xu Bai was very helpless. Xu Le’s broken toy was ultimately not fixed by Xu Bai; he wasn’t omnipotent.

But to maintain the tall image of a brother in front of his younger brother, he secretly made an identical-looking toy train for Xu Le and kept the broken toy train Xu Le had damaged.

Actually, he brought it to the Research Institute, but he didn’t expect that even his own clothes couldn’t be brought in, so the toy train was confiscated. Thus, he couldn’t take out the toy train’s battery and the electric vehicle’s battery for Fang Mu to compare, only able to rely on Fang Mu comparing them in his mind.

Fang Mu had made both batteries, so he still had an impression of them. He recalled the appearance and differences between the two batteries in his mind.

Are they different in size?

But Fang Mu thought this difference might be too simple and probably not the case. So, he explained his thought process for making the toy electric train’s battery.

”At the time, I was only thinking of developing the electric vehicle battery in two directions: either enlarging or shrinking it. But I couldn’t control the enlargement well; it actually caused problems, providing less power and heating up very quickly. Luckily, I dealt with it in time, otherwise, I think it would have exploded. So I could only think of shrinking it.”

Xu Bai’s eyes encouraged Fang Mu to continue speaking. Fang Mu understood and re-evaluated what problems had arisen during his research.

”Oh, right. I also thought that if the battery was shrunk, it would be the same as the toy train battery I made before, so changing it or not wouldn’t make a difference. So I thought, it’s about the power issue you taught us before. I wanted this toy electric train battery to have the same power as an electric vehicle’s but also be a bit smaller.”

”Yes, your idea is excellent. The battery you researched later stores more power and is also smaller in volume. You have solved the problem of battery lightweighting and volume control. Your research is very useful.”

Xu Bai summarized it for him.

Fang Mu, receiving Xu Bai’s affirmation, looked at him with sparkling eyes.

”I need your technology right now to research a drone cards.”

”What is a drone?”

”A drone is an aircraft that doesn’t require a person to pilot it and can be remotely controlled through other devices. My idea is to equip this aircraft with weapons so it can be remotely controlled to fly into groups of Strange Beast and attack.”

”Because we have always faced Strange Beast in defensive city battles, I thought about taking the initiative to attack.”

”Initially, I wanted to create planes that people could sit in, but there are two problems that cannot be solved yet:

First, we cannot guarantee the safety of the pilots. High altitude is a realm humans have never entered. Although most people yearn for it, I think more people are still afraid. If many people die, I worry they will become even more fearful and dare not fly again.

Second, I currently cannot make the engine that supports aircraft flight. To make a large manned aircraft fly into the sky, electricity currently cannot provide such a large amount of energy; other energy sources need to be researched.”

At this point, Xu Bai suddenly thought of the power needed for planes. Initially, it seemed to use gasoline, and then upgraded to aviation kerosene. This meant that trying to make a plane fly solely on electricity was something he couldn’t imagine.

Gasoline is a fuel obtained from crude oil through atmospheric distillation and refined processing, and crude oil itself is formed through long periods of evolution.

However, in this world, for some reason, there are no such things underground; coal is all made by cardss.

Xu Bai suddenly remembered how coal and oil were formed in his previous world, which he had studied.

Coal is formed when plant remains on land accumulate in swamps or wetlands, slowly forming peat in an anaerobic environment. Then, peat is buried hundreds of meters underground, dehydrating to form lignite under low temperature and pressure. As it is buried deeper, increasing to 1-3 kilometers, it further carbonizes to form bituminous coal. When buried deeper than 3 kilometers, coupled with high temperatures, it gradually forms high-energy density anthracite.