Sima Lihong, a mathematics lecturer in elite schools, has been engaged in teaching for more than ten years, and has ten years of experience in college entrance examination. He accurately grasps the proposition trend of college entrance examination, has rich teaching experience and in-depth teaching research. He is the head of teaching and research, and is good at teaching methods, making students jump into the sea and take exams easily. His teaching achievements are outstanding and his teaching results are good, and his previous students' grades have been greatly improved.