When he first entered the school, many teachers and classmates thought he was "mediocre and mentally retarded". He secretly vowed that he must fight back against this prejudice with excellent academic performance! Since then, Hua has devoted himself to mathematics as if possessed. His mind is full of mathematical formulas, and solving mathematical problems has become his greatest pleasure. During the day, he even thinks about solving problems while walking. In the evening, he worked tirelessly by burning a small oil lamp ... In this way, Hua overcame a series of problems and enjoyed endless happiness.