Tall man. According to official website's inquiry about the mathematical modeling competition of Beijing Normal University, the mathematical modeling competition of Beijing Normal University is a national second-class competition, and the high school group competition is suitable for high school students who are interested in mathematical modeling, which can enhance students' ability to solve practical problems by using mathematics and has high gold content. The mathematical modeling competition of Beijing Normal University is of positive significance for expanding students' comprehensive quality and improving their ability of organization and coordination.