What app is used to analyze Li Yanfang's real questions?
Good grades teacher edition. Li Yanfang, a math teacher in a postgraduate school, revealed in a live video broadcast in March 2022 that she used some real questions to analyze, and some of them were good grade teacher's versions of the app. App mobile phone software mainly refers to the software installed on smart phones, which improves the shortcomings and personalization of the original system.