Euclid was a famous mathematician in ancient Greece. He lives in Alexandria. Euclid made great achievements in mathematical geometry at that time. Numerous students came to worship him as a teacher, and even the king had learned Euclid's knowledge. His attitude towards students is rigorous and modest, and he will severely criticize students who are not serious. Euclid was also a member of Alexander School, and his thoughts and knowledge had a great influence on ancient Greece.

The Elements of Geometry written by him has been widely used in the field of mathematics. This book is the earliest translated western masterpiece in the history of China. This secret book contains Euclid's thoughts and records the future development of geometry and mathematics, which was a sensation at that time. The object of Geometry Elements is geometry, in which Euclid used the axiomatic method. The so-called axiom is a proposition that does not need to be proved, and all theorems should be deduced accordingly. This method is called a model of rigorous thinking for two thousand years.