1. According to the query of Bright Life. Com, Li Fei pays attention to the cultivation of students' thinking ability and problem-solving practice in the teaching process, and helps students to form good mathematical thinking habits and problem-solving ability by analyzing examples, explaining skills and summarizing methods.

2. Teacher Li Fei's mathematics course for postgraduate entrance examination is characterized by clear explanation, emphasis on foundation and strong systematicness, which can help candidates master the basic knowledge and problem-solving skills of postgraduate entrance examination mathematics. Therefore, Li Fei speaks mathematics very well.