1. The universe is huge, the particles are tiny, the speed of rockets, the ingenuity of chemical engineering, the changes in the earth, the mysteries of living things, and the complexity of daily necessities. Mathematics is used everywhere. ——Hua Luogeng

2. The numbers in late order are not sacred, they are tangible and can be detected, and they can be deduced by counting. ——Zu Chongzhi

3. After modern high-energy physics reaches quantum physics, many experiments cannot be done at all. You can use paper and pen to calculate at home. This is not far from what mathematicians imagined, so mathematics is said to be in physics. It has incredible power. ——Qiu Chengtong

4. We appreciate mathematics, we need mathematics. ——Chen Shengshen

5. Genius lies in accumulation, and intelligence lies in diligence. ——Hua Luogeng

6. When the number is missing the shape, it is less intuitive, and when the shape is missing the number, it is difficult to understand the subtleties. ——Hua Luogeng

7. There are two necessary processes to lay a good foundation in mathematics: first learn and accept "from thin to thick"; and then digest and refine "from thick to thin". ——Hua Luogeng

Extended information

Chen Jingrun’s story:

Born in a family of clerks, he has an older brother and younger siblings, ranking third. . Because there are many children in the family and my father’s income is meager, family life is very tight. Therefore, Chen Jingrun seemed to be a burden to his parents as soon as he was born, a person who considered himself unwelcome. After going to school, he was often bullied because he was thin and weak.

This special living situation has shaped him into an extremely introverted person who is not good at talking. Coupled with his obsession with mathematics, he has developed the habit of being a loner and staying alone. Because of his poor thinking habits, he was considered a "weirdo" by others. Chen Jingrun chose to study mathematics, an extremely difficult life path, because of Professor Shen Yuan.

It was there that Chen Jingrun learned about Goldbach’s conjecture for the first time. It was from there that Chen Jingrun determined to pick the crown jewel of mathematics from the first moment.

In 1953, he graduated from Xiamen University and stayed at the school to work in the library, but he never forgot Goldbach's conjecture.

He sent his mathematics paper to Professor Hua Luogeng. After reading it, Hua Luogeng admired his talent very much and transferred him to the Institute of Mathematics, Chinese Academy of Sciences as an intern researcher. From then on, he was fortunate to study under the guidance of Hua Luogeng and studied with Goethe. Bach conjecture marches on.

In May 1966, a dazzling new star shone in the sky of the global mathematics community. Chen Jingrun announced that he had proved "1 2" in Goldbach's conjecture; in February 1972, he completed the modification of the "1 2" proof.

What is unbelievable is that foreign mathematicians used large-scale high-speed computers when proving "1 3", while Chen Jingrun relied entirely on paper, pen and head. If this is puzzling, the 6 sacks of manuscript paper he used just to simplify the proof of "1 2" are enough to explain the problem. In 1973, he published the famous "Chen's Theorem", which is hailed as the glorious pinnacle of the sieve method.