1. Accurate diagnosis: Professor Cui Yu can quickly and accurately find problems in students' study, which is due to his rich teaching experience and profound subject knowledge. Through accurate diagnosis, he can make a personalized teaching plan for each student, thus improving the learning effect of students.

2. Systematic teaching methods: Professor Cui Yu is good at summarizing and refining teaching methods and skills, and applying them flexibly according to the actual situation of students, focusing on systematic teaching for students from both macro and micro levels, so that students can master knowledge and cultivate their own learning methods and thinking ability in the learning process.