1. The quality of topic selection is high: a topic selection for top students in Wan Wei is planned and selected by the professional education team. The topic is rich in content and moderate in difficulty, which can meet the learning needs of top students and is suitable for other students to consolidate and improve.

2, detailed analysis: each topic is equipped with detailed analysis, including problem-solving ideas, key knowledge points and problem-solving skills. This kind of analysis can help students better understand the topic, master the problem-solving methods, and cultivate their thinking ability and autonomous learning ability.