In the evening, he continued to read and study foreign mathematics books for high school students to continuously lay a solid foundation. Yu Hua did not aim too high and learn advanced mathematics content such as integral equations and calculus in advance, but tried to lay a solid foundation as much as possible.
He read functions over and over again, and repeated trigonometric functions and derivatives. Due to limited knowledge level, Yu Hua's mathematical level improved slowly, but his foundation was condensed and solidized time and time again.
A tall building begins with a foundation. Only when the foundation is solid can the building be built higher and higher.
Only after he has thoroughly mastered all areas of basic high school mathematics can Yu Hua leap to the advanced mathematics stage.
It's seven o'clock in the evening, ten minutes before class starts, the night is dark, and it's about the same time.
Yu Hua packed up his things, stood up, called Lin Wan next door, and left the library.
After returning from the library and entering the classroom, the students sat in corresponding seats. Some read, some endorsed, some took notes, and some whispered.
Seeing Yu Hua's figure, Fang Yu, who was sitting in the first row, immediately smiled and nodded lightly.
Yu Hua nodded in return, smiled, and walked to the back row.
"You're back now? There are still five minutes left. How are you getting along with our Chairman Lin?" Zhou Yuan held the warm steel kettle with both hands and took a sip of the hot water he had just filled. When he saw Yu Hua sitting down
After it was done, he expressed concern.
Yu Hua rolled his eyes at Zhou Yuan and responded: "When it comes to getting along, I learn from mine and she learns from hers. We don't usually chat much, it's just a very ordinary relationship."
"Tsk tsk, I don't believe it. Jin Jie from Literature Class 1 was scolded by Lin Wan today. The reason was not the slap mark on your face yesterday? The explanation is just a cover-up. It's okay. In your youth, I support your pursuit of Lin Wan, as long as it does not affect your studies.
." Zhou Yuan chuckled.
"..."
Looking at the somewhat wretched Zhou Yuan, Yu Hua sighed. No matter how he explained that the slap marks on his face were caused by him, these people just didn't believe it. Lin Wan didn't believe it, Zhou Yuan didn't believe it, and everyone including Erjiaer didn't believe it.
I have nothing to say, and I am too lazy to continue explaining this issue.
Pursuing Lin Wan?
Can.
But it's not necessary.
Yu Hua didn't want to waste any of his free time. Regarding personal emotional issues, he didn't consider them at all now.
"Okay, Brother Yu, I'm joking. You should be careful about Jin Jie. His relatives are serving as subordinates under Han Fuqu. Of course, generally speaking, jealousy like this in school cannot be brought to the forefront and will not attract the other party's attention.
The family may take action, but you still have to be careful." Zhou Yuan reminded carefully.
Yu Hua nodded: "I understand, thank you Brother Zhou for reminding me."
"By the way, this is a check for 720 yuan from me and Fang Yu. Please keep it for class fees." Zhou Yuan didn't say anything and glanced behind him. The two classmates behind him were concentrating on reading.
Without paying attention to himself, he took out a check from his arms with his right hand and handed it to Yu Hua.
The words were vague and did not explain what class it was. Zhou Yuan did not want his opportunity to be lost like this.
After lunch, Zhou Yuan and Fang Yu discussed it and pooled together the tuition fees. Their families were quite wealthy, so spending three hundred and sixty yuan each would not be a big deal.
"good."
Yu Hua took the large-denomination check and took a look. It was a cash check from the Peking Branch of the Bank of Communications of the Republic of China. It had a denomination of 720 yuan written on it. You could withdraw the money at any time.
Yes, it’s legal currency again.
Looking at the contents of the check, Yu Hua knew that he had to worry about the legal currency again, so he put it away in his inner pocket. Before the outbreak of the all-out war of resistance against Japan, the seven hundred and twenty yuan was either offered to be exchanged for oceans, or used directly for purchase.
Material.
Otherwise, over time, a check for seven hundred and twenty dollars will turn into a few pieces of toilet paper.
Zhou Yuan didn't know what Yu Hua was thinking, so he smiled at Yu Hua, then turned to read and immersed himself in studying.
Students of this era are not like students of later generations, who need teachers to supervise and monitor them on the podium before they can learn. They all study hard on their own initiative.
Again, as a small number of elite talents in the country, they shoulder the expectations and yearnings for the future of those who cannot read, and entrust their wishes for the prosperity and strength of the country. Under such a driving force, no one will choose to waste precious time.
.
The night is getting darker.
Inside the house, incandescent lights shine.
The cold wind outside the window never stopped.
Shrouded in darkness, Peiping No. 4 Middle School is one of the few places with light around it.
In the light, a group of teenagers are moving forward.
…
The next day.
The last class in the morning ended and the students left one after another. Fang Yu, who was full of expectations, arrived early at the empty classroom at the end of the third floor.
As a girl in Class 1 of Science, Fang Yu has unusual hobbies from other girls. Girls of the same age either like playing chess, calligraphy and painting, or they like to dance and write a good article to attract others' attention.
She is quiet by nature and likes to study in a quiet corner and learn about science, especially chemistry and mechanics.
Usually in the class, Fang Yu regards the chemical knowledge that others regard as boring and boring as a treasure. The chemical formulas and various elements that others find a headache, but Fang Yu finds them enjoyable to read, as if she is enjoying a cup of tea.
Fang Yu finds abstract and complex machinery even more magical. She is very curious about this kind of mechanical equipment that does not require manpower and can operate only with electricity.
Driven by electricity, the working efficiency of these mechanical equipment is several times, even dozens of times, that of human power.
These advanced and powerful mechanical equipment are one of the reasons why Western countries are ahead of China.
At the beginning of the school year, the whole class talked about their ambitions. Fang Yu, who ranked second in the class, wanted to get into the National Chiao Tung University, which is on par with Tsinghua University in science subjects, engage in chemical research, and become a chemist like a Nobel laureate.
family, and mechanical engineers who have not told the outside world.
Fang Yu's chemistry talent is extremely high. In the science class 1, which is a gathering of elites, one of her girls' chemistry scores ranked first in the class, surpassing everyone else.
If engaging in chemical research is a gift, then engaging in mechanical research is her dream. She wants to develop mechanical equipment with advanced performance to bridge the gap between China and foreign countries.
At the Shanghai Machinery Factory, the condescending attitude and arrogant looks of those German engineers deeply hurt Fang Yu's heart. As a student, she was determined to make a name for herself in the field of machinery.
However, no matter how Fang Yu studied, he would never be able to enter the mechanical field because Fang Yu did not know how to draw or read pictures.
How to build a tall building without a foundation?
Western countries and Japan have secretly established a knowledge blockade against China. Any outstanding students who go abroad to study this knowledge, as well as students with top talents, receive special attention and control.
Many people even died abroad.
Just when Fang Yu felt despair and even thought that this life could only go on like this, a ray of light appeared in the endless darkness.
Yu Hua, a classmate who usually has an unattractive appearance, no, now his name is changed to Yu Hua, actually knows how to draw.
No one can understand this feeling, not even the most appropriate "Sapphire Case·Yuan Xi" can describe this feeling. Fang Yu almost cried at that time.