The rest of the time is all about learning.

In order to save time, Gu Dong temporarily gave up Chinese and English, and focused on mathematics, physics and chemistry.

After reading the textbook, he searched for some information about lithium batteries in his mobile phone.

Gu Dong's purpose is to make the energy battery in the science and technology city.

That thing is too important to let go.

Originally, it was possible to go directly from the Technopolis, but that might be discovered, so I had to do it myself, research it myself, or produce it myself.

It would be great if he could produce that kind of battery himself.

There are a lot of knowledge points in lithium battery design, and it is impossible to make it with his current knowledge reserves, but Gu Dong is not in a hurry, he has time.

While checking the information on the principle of lithium batteries, while continuing to supplement the knowledge of physics and chemistry, I have to say that studying in high school gives him a great advantage, because in a sense, high school belongs to the peak of knowledge reserves in a person's life.

For the college entrance examination, some teenage students know astronomy and geography, and if the average person passes the college entrance examination, they basically forget and lose.

Lithium batteries are currently the mainstream of batteries on the earth, and it is not difficult to manufacture lithium batteries.

Lithium-ion batteries are generally batteries that use lithium alloy metal oxide as the cathode material, graphite as the anode material, and non-aqueous electrolyte.

Of course, just learning how to make lithium batteries is not enough, he also needs to know how the energy batteries in the science and technology city are produced, and what is the principle?

Perhaps the batteries in the science and technology city are not compatible with the batteries on the earth at all.

There seems to be a graphene battery on Earth, but this battery still has a large bottle top and is not practical.

Gu Dong doesn't care about anything else for the time being, since there are lithium batteries, then let's learn lithium batteries first, and then there is no harm in mastering more knowledge.

For a whole day, Gu Dong read the physics textbook and chemistry textbook of the first year of high school, and after thinking about it for a while, he found that he had indeed memorized it, and then wanted to find some textbooks for the second and third years of high school to read.

It is not difficult to find textbooks for the second and third years of high school, his family does not have textbooks for the second and third years of high school, and if you want to, you can only borrow them from others.

As far as he knew, Tang Xiu and Yang Shenpan had textbooks for their sophomore and third year of high school.

It was lent to her by the teacher.

In the class, some students with good grades occasionally try to get a set of textbooks for the second and third years of high school.

They will look at the contents in advance.

Tang Xiu and Yang Shenpan's grades are good, and they are both among the top few in the class, so Tang Xiu has already made a complete set of high school textbooks when he was just in high school.

Whether she has learned or not, Gu Dong doesn't know, but if she is free, she will definitely take a look at the content in advance.

So as soon as school ended, Gu Dong found Tang Xiu.

"What? Do you want to borrow physical chemistry textbooks for the second and third years of high school?" said Tang Xiu in surprise as he walked after school.

Gu Dong nodded and said, "I want to take a look." Xiuxiu, are you still at home with that set of textbooks?"

"It's still there, it's on my bookshelf!" Tang Xiu was happy when he heard this, and suddenly stood on tiptoe and touched his head and squinted: "Brother Dongzi, why did you suddenly remember to read these textbooks? These textbooks are so difficult!"

Gu Dong smiled and explained: "I'm interested in lithium batteries, so I want to study it, and now I just want to see what the textbook can help!"

"Are you interested in lithium batteries?" Tang Xiu smiled again and looked at him with those big crystal clear eyes: "Brother Dongzi, you won't be stimulated, right?"

"No, but I suddenly had some whimsical idea to invent a battery!" Gu Dong said: "But I don't know if I can do it yet!"

"Huh?" Tang Xiu heard this, and immediately glanced at Yang Shenpan, and his expression became strange.

Yang Shenpan smiled: "Gu Dong, do you still want to invent batteries?"

Gu Dong smiled and said, "Give it a try, just give it a try." I'm too biased, and I probably don't have any expectations for studying!"

"Brother Dongzi, I support you. However, the production of lithium batteries is still very simple. I heard that the chemistry teachers in the second year of high school all teach!" Tang Xiu laughed.

Although she wondered why Gu Dong suddenly wanted to do this, it was not a big deal, boys had some strange hobbies, such as dismantling electrical appliances, such as playing games, and when she was a child, she often drilled into the refrigerator to see how the refrigerator lights went out!

"It's very simple, that's why I want to learn it!" Gu Dong didn't finish his words, after all, he didn't know if he could make his own battery.

Tang Xiu and Yang Shenpan both smiled when they heard this, and they didn't take it seriously, this matter was just a trivial matter for them, and they didn't need to care about it at all.

The three of them went to find a snack bar to fill their stomachs, and then Yang Shenpan said goodbye to them, squeezed the bus home, and Gu Dong and Tang Xiu also went back.

On the way, Tang Xiu was still chirping about some things, she seemed to be in a very good mood, because she did well in the exam, so when she was in class today, the teacher praised her again, which made her very happy.

Gu Dong listened to it and found it interesting.

This girl is getting cuter!

Well, it's not just cute, it's beautiful!

Back in the community, she went to Tang Xiu's house to get the textbooks first, there was no one at her house, her parents had gone out to work, and after getting the textbooks for the second and third years of high school, Gu Dong did not hesitate and immediately returned to his home.

However, when he pushed the door in, he found that there was a middle-aged man sitting in the living room of his house, who else was not his father Gu Dechang?

Seeing him come back, his father immediately glanced at him, and suddenly looked unhappy.

"Dad!" Gu Dong hurriedly shouted.

Dad's mood was not very good, and he didn't seem to bother to say anything, so he said directly: "The contents of the bag are all yours, take it back!"

Gu Dong took a look, and saw a few bags on the table, without thinking about it, it must have been the gift he bought for him after returning from a business trip.

Although his father would occasionally get angry and beat him up, in fact, if he was on a business trip, he would buy him some gifts every time he came back.

Gu Dong nodded, and found that his father's face was full of exhaustion, so he couldn't help but be stunned, and asked, "Dad, I heard that you went to Andong City this time?"

"Hmm!" Dad nodded, stared at him again, and said, "Don't you want to study anymore?"

Gu Dong was stunned for a moment, and hurriedly said, "No!

"I listened to your mother about you. If you don't want to read, then don't read it from next semester!" Gu Dechang said with some hatred: "Anyway, I guess it's a waste of time for you to read, so it's better to learn a little craft from your Uncle Hao!"

When Gu Dong heard this, he hurriedly said, "No, I still want to read it." ”

"Heh, you didn't read it well!" Gu Dechang seemed very tired, sighed and said, "Go, wash the fruit and take it out to eat!"

He didn't seem to want to say more, and he didn't bother to scold Gu Dong.

Maybe it's also because mourning is greater than dying!