Cheng Tong, 1949, from Shantou, Guangdong. His hometown is Jiaoling in Meizhou and he grew up in Hong Kong. My father taught at Hong Kong Xiangrang College and Chung Chi College, the predecessor of the Chinese University of Hong Kong. My father and godmother are very kind. Qiu Chengtong had a carefree childhood and got excellent grades. But when 14 years old, his father died suddenly, and the family suddenly lost its financial resources. Although Qiu Chengtong had to work and study at the same time, he was admitted to the Mathematics Department of the Chinese University of Hong Kong with excellent results. Father/kloc-died at the age of 0/4, and his family was poor. He played truant in middle school for a year, and his grades were so poor that he almost dropped out of the list. /kloc-when he was 0/9 years old, he came to Berkeley, USA. "When he graduated at the age of 2 1, he was destined to change the face of mathematics." These are not my words. This is a sentence quoted by Mr. Chen Shengshen when UCLA wanted to hire Professor A Qiu several years ago. 10 years later, he became a generation of pride in mathematics. It's less than 10 years since he entered Berkeley and gave a speech at the World Congress of Mathematicians. When he was only 28 years old, that year, Mr. Chen Jingrun was invited to give a 45-minute lecture. During this period, he proved Calabi conjecture and positive mass conjecture, and created a brand-new field: geometric analysis. 198 1 year. At the age of 32, he won the Van Buren Award of the American Mathematical Society, one of the highest awards in differential geometry. 1983 was awarded the Fields Medal-the highest honor in mathematics; 1994 won the Crawford Prize. In addition, he was awarded the title of the best scientist in national medal of science award and California, academician of American Academy of Sciences, honorary doctor of Harvard University, foreign academician of China Academy of Sciences, honorary doctor of Chinese University of Hong Kong ... During his college years, he completed all the required courses and read a lot of extracurricular materials. His outstanding achievements and research spirit were appreciated by Saraf, an American professor at that time, and Saraf strongly recommended him to pursue doctoral studies at the University of California, Berkeley. Around the 1970s, Berkeley was the center of differential geometry in the world, where many outstanding geometricians and young scholars gathered. Here, Qiu Chengtong won a scholarship from IBM and studied under the famous differential geometer Chen Shengshen. The process of editing mathematics is wonderful and rough. Even young students who are determined to make contributions in the field of mathematics can persist in the end and produce results, which is really rare. Qiu Chengtong is such a "morning star". It is often the case that there are fewer and fewer students in the huge classroom, and finally only the professor gives detailed guidance to the only student under the podium. The only student Qiu Chengtong is Qiu Chengtong. After studying in Berkeley for one year, Qiu Chengtong finished his doctoral thesis and skillfully solved the famous "Wolf conjecture" at that time. His ingenious solution to this problem made the world mathematics community aware of the emergence of a new mathematical star. After receiving his doctor's degree, Qiu Chengtong met many young world-class mathematicians and finished two papers during his one-year visit to Princeton Institute for Advanced Studies. 1In the autumn of 972, Qiu Chengtong, who was only 23 years old, was invited to work as an associate professor at new york University, Xishi Branch, and finished several papers. At the conference on differential geometry held by the American Mathematical Society in 1973, Qiu Chengtong made three academic reports, and showed his leading level in the field of differential geometry to the mathematical community with his outstanding ability and contribution. This year is a very important year in Qiu Chengtong's mathematics career. He finished a famous paper called Upregulated Sum Function of Complete Riemannian Manifolds, which, in his own words, was a turning point in his mathematical career. In fact, this paper laid the foundation for his basic ideas and skills in using analytical methods. Qiu Chengtong's most important and influential work is to prove "Calabi conjecture". He solved this problem with powerful partial differential equation estimation at the end of 1976. While solving "Calabi conjecture", he also proved the existence of Kohler-Einstein metric on compact Kohler manifold with negative definite first Chen class. From 65438 to 0976, Qiu Chengtong was promoted to be a professor of mathematics at Stanford University. 1978, invited to give an academic report entitled "The Role of Partial Differential Equations in Differential Geometry" at the World Mathematical Congress held in Finland. This report represents the research direction, methods and mainstream of differential geometry around the 1980s. Later, he solved a series of difficult problems in the field of mathematics, such as "positive mass conjecture". Qiu Chengtong's research work is profound and extensive, involving all aspects of differential geometry, with many achievements. From 65438 to 0989, the American Mathematical Society held a conference on differential geometry in Los Angeles, and Qiu Chengtong, as a new generation leader of differential geometry in the world, served as the chairman of the conference. The spiritual fate of editing this paragraph is fair, and medals and honors are awarded to those who persist to the end in class. This did not stop Qiu Chengtong, who continued to do a lot of complicated research work and made continuous achievements. Perseverance, perseverance and perseverance are the spirit of Qiu Chengtong. Of course, not everyone with this spirit can achieve the same achievements as Qiu Chengtong. Mathematics needs diligence as well as genius. As the famous mathematician nirenberg said, Qiu Chengtong "not only has the intuitive ability of a geometer, but also has the talent of an analyst". Mr. Zheng, a famous mathematician, recalled that he had been thinking about many mathematical problems for nearly 20 years. Although they still haven't solved it, he still hasn't given up thinking easily. Qiu Chengtong has always been very concerned about China's mathematics career. Since 1984, he has recruited more than a dozen doctoral students in China to train talents in differential geometry for China. His approach is not only to teach students some special skills, but also to teach them how to understand the incisiveness of mathematics. His student Tian Gang also won the Van Buren Prize with 1996, and is recognized as one of the most outstanding differential geometricians in the world. Mathematics is wonderful, and only by perseverance can we explore its true meaning. For a mathematician like Qiu Chengtong, this kind of exploration is not only the meaning of life, but also the pleasure of life. Mr. Qiu is definitely not perfect, but he is definitely a great mathematician. You may not like this man, but you can't help liking his math. He proved many wonderful theorems. Those who study mathematics will know that his theorem is wonderful when they read graduate students. His Calabi conjecture is undoubtedly one of the most profound theorems in mathematics, especially in superstring theory. I think Professor Qiu is absolutely unexpected. He has a strong personality and never gives up. His works have won numerous awards. These also brought him many misunderstandings. He became famous in his twenties because of his success as a teenager. Some people say that he is arrogant. Of course, such achievements also gave him arrogant capital. I compare him with Bobby Chen. Mr. Chen Shengshen has been with him for a long time, and everyone knows that they are arrogant, but they express their arrogance in different forms. Qiu Chengtong is very straightforward. Mathematics and being a man are his criteria for measuring you. If he looks at you, it means that you are not good at math. He doesn't want to talk to you much. You don't do what he thinks, and he doesn't want to talk to you. Mr. Wang can live in peace with everyone without laughing, but you can feel the respect or disdain in this smile yourself. They are all true gentlemen and great mathematicians whom I admire most. They all respect real gentlemen and real mathematicians. I think this is their real treasure. For more than 30 years, Mr. Qiu has not only grasped the pulse of mathematics and physics at all times, but also guided the development trend of mathematics in the world. He has always cared for and helped the progress of mathematics in China with a pure heart. He trained many mathematicians in China. His students and postdoctoral researchers are all over major foreign universities. At the end of this paragraph, he established four mathematics centers in three places on both sides of the Taiwan Strait. The purpose of establishing the Mathematics Center is to train a generation of young people in China, which he regards as the focus of his career. I now see him busy treating people every day. In fact, many purposes are donations, hoping to save some money for the country and train young people in China with donations from wealthy businessmen. Professor Qiu's goal is to train more Zhu Xiping in five years 10. He founded the World Congress of Chinese Mathematicians, which benefited countless mathematicians at home and abroad. We are fortunate to be his disciples, collaborators and friends, and become his admirers from unknown students. Our 20 years of contacts have made us respect him more and more and love him more and more. When I was a student, I saw dozens of great mathematicians' names on the wall of the Mathematics Museum of the Boston Science Museum, including three names from China: Hua,,. I think Professor Qiu was only in his thirties when he carved his name. Today, when we think of geometry, physics and China's science, any mathematician or physicist in the world will think of this name-Qiu Chengtong, the name of China engraved in the history of mathematics. Positive mass conjecture.