1, detailed analysis: 38 series of textbooks provide detailed answer analysis, including problem-solving ideas and skills. This helps students to understand and master problem-solving methods and improve their ability to take exams.

2. Comprehensive content: 38 sets of Tian Li collected nearly 200 sets of senior high school entrance examination papers from all over the country, covering a wide range of knowledge points and questions, which can meet the needs of students to practice and test their learning level.