Chen Jingrun’s short story: Chen Jingrun was born in a poor family. His mother had no milk when she gave birth to him, so she survived by borrowing rice soup from neighbors. He was about to go to school, because his father's salary as a post office clerk was too low to support his eldest brother in school, and his mother had to carry her little sister, who was less than two years old, to work in the fields to earn money. In this way, the burden of taking care of the 3-year-old little brother falls on Xiao Jingrun's shoulders. During the day, he led his younger brother to sit on a small bench and play with his fingers; in the evening, after school, he begged his elder brother to teach him arithmetic. When I was a little older, I squeezed out the time to help my mother work in the fields and was busy practicing writing and calculations. Seeing his eagerness to learn, his mother sent him to Chengguan Primary School. Although he is thin, he works very hard and gets good grades, which arouses the jealousy of the children of wealthy families, who beat and kick him. He couldn't beat those people, so he went home in tears and asked to drop out of school. His mother stroked his wounds and said: "My child, I only blame us for not having the ability and being bullied because our family is poor. You have to study hard, fight for your reputation, and grow up." If we are promising, then they won't dare to bully us!" Xiao Jingrun wiped away his tears and went to do his homework again. After that, he never shed a tear again. He turned the physical and mental pain he suffered into the motivation to study. His grades continued to be top-notch, and he was finally admitted to Sanyuan County Junior High School with the first place in the school. In junior high school, he received special attention from two teachers: one was a Chinese language teacher in his late sixties who was originally a professor. He saw the Japanese being domineering while the Kuomintang was giving in and felt sad. It was a pity that he was old. Place your hopes on the next generation. When he saw that Chen Jingrun was hardworking and promising at a young age, he often called him to his side and told him about the 5,000-year history of Chinese civilization, encouraging him to study hard and shoulder the heavy responsibility of saving the motherland. The teacher's words often brought tears to his eyes. Chen Jingrun also said with tears that when he grows up, he will definitely serve the motherland! The other is a mathematics teacher under 30 years old. He graduated from the Department of Mathematics of Tsinghua University and is very knowledgeable. What Chen Jingrun is most interested in is the math class. It only takes two weeks to complete the textbook. The teacher felt that this student was unusual, so he made extra efforts to teach him more, and further stimulated his patriotic enthusiasm, saying: "If a country or a nation wants to be strong, it is absolutely impossible if the natural sciences are not developed. Mathematics is the foundation of natural science." From then on, Chen Jingrun became more passionate about mathematics. Until he graduated from junior high school, he maintained a record of perfect A's in mathematics. After the liberation of his motherland, Chen Jingrun was admitted to Fuzhou Yinghua Academy to attend high school. Here, he was lucky enough to meet Teacher Shen Yuan, whom he would never forget. Teacher Shen used to be the dean of the Aviation Department of Tsinghua University. At that time, he was Chen Jingrun’s class teacher and also taught mathematics and English. Teacher Shen is knowledgeable and thoughtful, and students all like to listen to his lectures. Once, Teacher Shen asked an interesting classical mathematics question: "Han Xin orders troops." Everyone was counting down, and Chen Jingrun quickly replied in a low voice: "53 people." The whole class was stunned by how fast he calculated. Teacher Shen looked at this student who usually didn't talk much and wore clothes that were too high and asked him how he did it. Chen Jingrun's face turned red with embarrassment and he was speechless. Finally, he used The pen wrote the method on the blackboard. Teacher Shen said happily: "Chen Jingrun is very good at calculations, but he doesn't dare to talk about it. Let me help him talk about it!" After Teacher Shen finished speaking, he introduced ancient China's contribution to mathematics, saying that Zu Chongzhi's research results on pi were 1,000 years earlier than those in Western Europe. , Qin Jiushao's solution to the "joint linear equation" in the Southern Song Dynasty was more than 500 years earlier than the solution of the Italian mathematician Euler. Teacher Shen then encouraged: "We can't stop. I hope you can create greater miracles in the future. For example, there is the 'Goldbach Conjecture', which is an unsolved problem in number theory. People compare it to a crown. Pearl, you have to take it off!" After class, Teacher Shen asked Chen Jingrun what he thought. Chen Jingrun said, "Can I do it?" Teacher Shen said, "Since you can solve 'Han Xin's Order' by yourself, in the future, You can pick that pearl: Nothing is difficult in the world, as long as there are people who are determined!" That night, Chen Jingrun couldn't sleep, and he vowed to work hard at all costs no matter success or failure when he grows up!