Xuesi cheats are suitable for textbooks published by People's Education Publishing House. The Secret Book of Learning Thinking is a set of extracurricular mathematics textbooks published by Modern Education Press. The secret book of learning and thinking includes the training course and practice of primary school mathematical thinking, which is divided into 12 grades, covering primary school 1~6 grades, with 20 questions in each grade. The Secret Book of Learning Thinking is a set of auxiliary teaching materials for Olympic Mathematics that can be directly used in classroom teaching.