1 and the questions in Wan Wei are the representatives of the real questions in the exam, and the answers given in them also list the process and ideas of each question in great detail, which is helpful for students to understand the knowledge points examined in this question.

2. The mathematics content in the book is comprehensive, and the explanations of knowledge points and examples are very detailed and moderately difficult. The book is interspersed with famous sayings and epigrams of many famous mathematical figures and knowledge of mathematical history, which helps to stimulate students' interest in mathematics.