The author's lineup, meticulous combing method, the idea of giving timely help in the snow, the ancient people all over the sky, the publishing orientation of icing on the cake, and the mathematical famous sayings of golden carvings.

This book has a wide range and is suitable for the syllabus of senior high school entrance examination in various places.

This book has many functions. It can be used as a reference for the senior high school entrance examination, the national "Hope Cup" math competition, the national junior high school math league, and also as a reference for elective courses and extracurricular activities.