I failed a course, and the system became my study supervisor.

Chapter 57 Even top students have things they are not good at
Xu Ling filled in the answers to the listening part at random, but his mentality was not affected.

It's a score I shouldn't have gotten, so what's the harm in not getting it?

Of course, no matter how you slice it, Xu Ling's English exam was a complete failure. To get past the passing score of 425, Xu Ling had no choice but to pray. The final writing section was a real lesson for Xu Ling.

"What does this Campus mean? It looks quite familiar."

"On campus?"

Xu Ling randomly guessed based on his hazy memory and quickly finished writing the composition. He himself had no idea how many seemingly correct and inappropriate words there were.

Just treat it as Shakespeare!

Who would have thought that Xu Ling actually guessed the word Campus.

"Xu Ling, how was it? You should have done well on the CET-4."

The first words Xu Ling heard when he returned to the dormitory were warm greetings from Yang Chaojie. While asking, he also came forward to greet him.

For a moment, Xu Ling felt a little uncomfortable, and looked at Yang Chaojie with a strange look in his eyes: "Well, it should be pretty good, except for the listening part."

This kid doesn't have any improper thoughts about me, does he?
Xu Ling felt a chill in an instant.

At this moment, Yang Chaojie's smile widened: "Haha, it's okay if you don't understand. No, it's okay as long as it's not bad."

Without hearing what he said clearly, Xu Ling's attention was completely focused on his "horrifying" smile, and he couldn't help but shrink back.

Yang Chaojie did not notice Xu Ling's subtle movements. He checked the examination equipment and prepared to walk out the door, still with an elusive smile on his face.

However, such an action appeared to be something else in Xu Ling's eyes.

He! He's coming towards me!
Xu Ling's heart suddenly started to ring with alarm, and he blurted out in a terrified voice: "Don't come over here!"

"No, what are you doing? I'm going to take the Level 6 exam! What do you think I'm doing? It's incomprehensible."

Yang Chaojie paused, looked at Xu Ling's expression as if he had seen a ghost, and said in great surprise.

Not bad, not bad. Not what I thought.

Xu Ling brushed his chest with lingering fear, breathed a sigh of relief, and smiled awkwardly.

Xu Ling thought that he could focus on doing his physics experiments after finishing the CET-4 test, but he didn't expect that he would have to take an exam on the outline of modern history the very next day.

Moreover, if Xu Ling had not seen that several of his roommates were unusually not playing games and were memorizing history question banks, he might not have known about this.

What made Xu Ling even more speechless was that it was clearly just a general education course, but its exam was even more difficult than the mathematical analysis which took up 6 credits.

The entire exam is divided into computer-based and paper-based tests. The main content of the computer-based test is multiple-choice questions and true-or-false questions, and there is a question bank.

It seems simple enough, but it is not.

The teacher provided a full 700 questions in the test bank, and the computer-based test would select about 30 of them. Most importantly, how much time was left until the next morning's computer-based test? Would there be 12 hours?
It was really urgent. Although he was extremely reluctant, Xu Ling still found the question bank and started to work on it one by one.

However, things went against his wishes. After a few minutes, Xu Ling was surprised to find that he couldn't continue watching. His thoughts kept wandering.

Those words, embodying the weight of history, seemed to be actively resisting entering Xu Ling's mind. What was going on?

Is it true that I can only focus on science subjects?

It shouldn’t be!

Then, Xu Ling found an electromagnetic learning problem out of disbelief.

In less than two minutes, the problem-solving process from beginning to end was completed in one go, without any distraction in the middle.

So, I am destined not to be a historian?
Hmm...it doesn't seem like a big deal.

Forget it, admit it, even if you are a top student, there are things you are not good at.

After figuring out his own position, Xu Ling simply stopped looking at the history question bank and instead took out the scientific drawing that he had almost forgotten from the cabinet - a small ultra-long-life lithium polymer battery system!

Lithium polymer battery, also known as polymer lithium-ion battery, refers to a battery in which at least one of the positive electrode, negative electrode and electrolyte is made of polymer material.

The long battery life mentioned by the system does not directly provide a battery with strong inherent battery life, but rather provides an improved solution based on the existing battery life.

This surprised Xu Ling. According to the system's capabilities, couldn't it directly provide a battery that could fundamentally defeat everything?
Obviously yes.

But why is it like this?
Is this to make Xu Ling more receptive? Or is it to ensure that the key technologies provided by the system cannot be too advanced?
Xu Ling shook his head, gave up guessing, and turned to study the drawing attentively.

The drawing shows a system architecture consisting of PEMFC, lithium-ion battery and supercapacitor technologies.

PEMFC is another type of battery, called polymer electrolyte membrane fuel cell, which here assists and supplements lithium polymer batteries.

PEMFC, lithium polymer battery and supercapacitor each play their own role in the entire battery system. In low power mode, PEMFC has good stability and higher efficiency.

In scenarios where sudden acceleration is required, supercapacitors can provide greater instantaneous power to meet the demand, while subsequent stable operation depends on the continued power of lithium-polymer batteries.

In this process, each single module, whether it is PEMFC or lithium polymer battery, can currently provide a battery life of only a little over 200 hours, but when combined with each other, they can achieve such a huge leap, reaching a battery life of more than 300 or even 400 hours.

It is worth noting that this system is not a simple addition of several modules, but an organic whole, and the load will not be increased much.

After reading the introduction of the entire battery system, Xu Ling finally understood that this was not a purely technical issue, but more like a system management issue.

There is one advantage to such a question, which is that with Xu Ling's current academic level, at least from the outside, it should seem like he can complete it independently.

So, next, should I write this drawing into a paper and publish it?

Xu Ling was a little hesitant.

The system has not released any related tasks.

Several question marks emerged in Xu Ling's mind.

Isn’t it a bit unbelievable that a student from the School of Physics would publish an article about battery systems?

I just published a PRL and now I’m publishing a new paper. Is this a bit rushed? Will it be suspected of being a watered-down article?

In addition, Xu Ling was also thinking about whether this paper could still be considered as his own independent work and whether it could trigger new achievements.
(End of this chapter)