Olympiad number refers to a difficult mathematical problem in mathematical competition, which is usually challenging and beyond the course content, aiming at cultivating students' mathematical thinking ability and problem-solving ability. These mathematical problems usually not only examine the mastery of mathematical knowledge, but also pay more attention to students' mathematical thinking ability such as creativity, logicality, reasoning, thinking depth and flexibility, which is one of the important ways for students to carry out mathematical inquiry, academic research and mathematical development.

Olympic mathematics usually refers to the mathematical problems in the International Mathematical Olympiad (IMO). The International Mathematical Olympiad is one of the most representative and influential mathematical competitions in the world. Attracting top high school students from more than 0/00 countries and regions around the world every year is one of the important platforms to show young people's mathematical talents and improve the level of mathematics education. Winning the honor in the International Mathematical Olympiad is the dream of many math enthusiasts and professionals.