Upon hearing this, Hua Luogeng thought thoughtfully, and had a higher evaluation of Yu Hua in his heart, with a serious face: "Scientific research and progress cannot be rejected, but how should we deal with Japan's current threat?"
"How long will little Japan be rampant?"
Yu Hua said solemnly: "A small country dares to give birth to the desire to devour China. If it hadn't been for measuring China's material resources and the favor of the country, how could it dare to gain power and clamor? It is a fact that China is weak, but one day,
Japan will be able to dress up like a little girl, students firmly believe this."
How many days will little Japan be rampant?
The words rang in his ears like thunder on a sunny day. Hua Luogeng was stunned for a moment. The next second, he felt that the blood on his body seemed to heat up and flow faster.
The tone was calm, not passionate, but full of power, which made people feel refreshed after listening to it. Since the September 18th Incident, it was the first time that Hua Luogeng heard words that were so disdainful of Japan's power.
Hua Luogeng shook his head and took a deep breath. He had to admit that Yu Hua had indeed convinced him.
"Yu Hua, please call me professor from now on. Internally and externally, you should be regarded as my first direct disciple, Hua Luogeng." Hua Luogeng took a deep breath, stared at Yu Hua with his eyes, and said seriously.
"Student Yu Hua, thank you professor." Yu Hua was overjoyed and saluted Hua Luogeng.
"Sit down and drink the ginger soup,"
Hua Luogeng smiled, motioned to Yu Hua to drink the ginger soup, then stood up and walked to the bookshelf aside.
Yu Hua did not hesitate, sat down obediently, picked up the steaming hot ginger soup, slightly boiled it, and drank it in small sips to get rid of the chill in his body.
While Yu Hua was drinking soup, Hua Luogeng carefully selected four thick and concise textbooks from the bookshelf and solemnly placed them on the surface of the desk——
"Derivatives and Limits",
"Calculus",
"The Theory of Real Variable Functions",
"Mathematical Analysis".
These four textbooks were all in English. When Yu Hua looked at them, he felt as if he were seeing the most precious jewels. His eyes shone and he couldn't move away.
If the anthology written by the teacher is the top dragon-slaying art in the field of human civilization struggle, then the four original English textbooks in front of us are the top dragon-slaying art in the field of mathematics of human civilization.
These four English textbooks, which are completely at the advanced mathematics level, are as precious as the treasures in fantasy novels in the extremely poor mathematics soil of the Republic of China.
"These are four original English textbooks. I brought them back from abroad. They are more difficult than the current mathematics textbooks at Tsinghua University. You are an extremely rare mathematical genius, or a genius in science. Take these four textbooks back and read them first.
If you don't understand something, just write it down. From now on, come to Tsinghua every Saturday and Sunday, and I will teach you one-on-one. I will say hello to No. 4 Middle School."
Hua Luogeng sat down and looked at Yu Hua: "The first grade of foreign universities is mainly based on calculus, which is also the core of the entire higher mathematics. Elementary mathematics studies constants and uniform variables, and advanced mathematics studies non-uniform variables, which is the real mathematics.
Research and lay the foundation. Since you have chosen to major in mathematics and want to master the sharpest tool, you must be prepared to study hard."
As a man standing at the top of the world's mathematics pyramid, Hua Luogeng naturally knows the difference between elementary mathematics and advanced mathematics.
Higher mathematics is the foundation of mathematical research. Compared with the vast ocean of mathematics in the future, it is still a process of laying a foundation.
After you finish high school mathematics, real mathematics has just begun.
"Students are always ready." The one-on-one words echoed in his mind. Yu Hua felt as if his breathing was trembling. He endured the excitement and nodded heavily.
One on one!
One-on-one tutoring from Hua Luogeng.
If this were put into the education and training market of later generations, would it explode?
Looking at Yu Hua, who regards advanced mathematics knowledge as a treasure, Hua Luogeng couldn't help but smile. Many science students in Tsinghua University felt a headache about this: "How long have you taken leave?"
"One day." Yu Hua replied truthfully.
Hua Luogeng arranged: "Then sleep here tonight. It's late at night and it's not safe to go back alone. Let's read a book by the way."
Yu Hua nodded without refusing. Suddenly he remembered a situation and asked, "By the way, professor, do the four textbooks need to be kept secret?"
"No, most people can't understand it, but those who understand don't need it. This is just to lay the foundation for you. Only the cryptography you learn needs to be kept secret in the future." Hua Luogeng shook his head gently.
Confidential?
Advanced mathematics, which is purely a basic category, does not need to be kept secret at all. Only higher-level cryptography research is something that needs to be kept secret.
Any progress in the field of cryptography will lead to huge changes in the field of modern intelligence and communications. Whoever studies cryptography more deeply will have a way to communicate confidential information and can reversely decipher the other party's plaintext information.
"Student understands." Yu Hua's eyelids jumped slightly when he heard the professional term cryptography, but he didn't ask out loud. He knew the importance of cryptography.
Cryptography has become an important branch of modern mathematics research. It is listed as a specialized independent subject abroad. It is a comprehensive applied mathematics, consisting of number theory, finite mathematics, algebraic geometry, mathematical logic, etc.
If Goldbach's conjecture, the crown jewel of number theory, has theoretical significance greater than practical application significance, and even makes people unable to see any application significance, then cryptography based on number theory is a purely applied mathematics discipline.
The importance of passwords is self-evident.
As long as communication is involved, whether it is radio communication or information exchange through various channels, cryptographic applications will be involved.
Of course, Yu Hua is well aware that cryptography-related knowledge is far from something he can touch at this stage, and his strength is not enough to touch such high-end subjects.
"You read here first, and I'll ask your wife to make the bed and get up early tomorrow morning for class." Hua Luogeng saw that Yu Hua knew what was enough, and the smile on his face became wider, he nodded, got up and left.
"Thank you, Professor." Yu Hua stood up and thanked him.
"Bang!" Hua Luogeng waved his hand and walked out. The door opened and then closed gently, and the study became quiet again.
Start learning.
Yu Hua adjusted himself, his eyes fell on the four advanced mathematics textbooks on the desk, and with anticipation in his heart, he took the lead in picking up the first "Derivatives and Limits" compiled by Cambridge University, turned to the first page, and soon
Immerse yourself in the mysterious ocean of mathematics.
If calculus is the basis of mathematical research, then derivatives are the calculation tools of calculus, and limits are the cornerstone of calculus.
Calculus without limits is like duckweed without roots; calculus with limits is the cornerstone of the entire modern human civilization.
"Derivatives and Limits" from the University of Cambridge is no longer about basic high school knowledge, but content at the university level. Fortunately, with an extremely solid foundation in elementary mathematics, Yu Hua can easily understand the knowledge and absorb it.
Essence.
At this moment, all worries, confusions, and external pressures disappeared, leaving only the brilliance of mathematics shining.
In the room, there was only the sound of turning books, neither fast nor slow.