Huang Yu (1964.7.14-2004.12.25) was named "Yu" because his father was from Qiubei, Yunnan and his mother was from Chongqing. Huang Yu was born in Yanshan County, the second son of his family. He is talented, especially has a special interest and hobby in mathematics, and his grades in mathematics and physics have always been excellent. He studied in Tongming Primary School, Guo Jing Primary School, Kunming No.22 Middle School, Middle School Attached to Teachers College, Primary School, Junior High School and Senior High School. . /kloc-at the end of 0/989, on the eve of master's graduation, he won a full scholarship from Johns Hopkins University, a famous American school, and went to the United States to study for a doctorate. He studied under the famous professor Xia Lika, engaged in the research of basic number theory, and served as a mathematics assistant for undergraduate and graduate students of Johns Hopkins University. 1994 left school, engaged in various occupations one after another, and continued to think about number theory in his spare time. In 2000, Huang Yu moved from Baltimore to new york and joined Imagination Software Company to develop commercial software. Since 2002, Huang Yu has been answering questions about mathematics in the Affiliated College of City University of new york. On February 25th, 2004, he died in a car accident.