It is said that it is not bad. The founder used to be the head of teaching and research in a well-known institution, and he had high requirements for the quality of the course. In his view, if the course quality is not good and the service is not good, it is cheating students. The current chaos in the industry is problematic. Good courses should not be packaged in the form of guarantee or agreement, and students' hard-earned money should not be advanced in advance.