Mathematical modeling of Shenzhen Cup can be organized across schools. Some organizers of mathematical modeling competitions encourage cross-school teams, mainly because cross-school teams can promote exchanges and cooperation between different schools, expand the scope of competition participation, increase the participation and influence of competitions, and improve the level and quality of competitions. In addition, cross-school team building can also promote resource sharing and complementary advantages between different schools, and improve the overall quality and teamwork ability of team members.