1, deep learning and thinking ability training: Olympiad focuses on deep learning and thinking ability training. In the Olympic Mathematics Competition, students have to face complex mathematical problems, and make in-depth analysis, reasoning and solution. This challenging learning process can cultivate students' logical thinking, problem-solving ability and creative thinking. In contrast, although Lego can cultivate children's creativity and problem-solving ability, it is relatively limited in deep learning and thinking ability training.

2. Improvement of mathematical knowledge and application ability: The Olympic Mathematical Competition requires students to have solid mathematical knowledge and application ability. By participating in the Olympic Mathematical Competition, students can get in touch with more advanced and in-depth mathematical concepts and problems, and improve their mathematical level and understanding ability. This is a good method for students who have a strong interest in mathematics or want to have a deeper study in the field of mathematics. In contrast, Lego can cultivate children's spatial imagination and hand-eye coordination ability, but it is limited in mathematical knowledge and application ability.