The quality of teaching is guaranteed. Chongqing Shapingba Disi Education Xiaoshengchu has qualified teachers to teach, and all teachers have qualification certificates. It is a formal educational institution. Teachers can help students keep their learning state, patiently answer questions for students, make lectures easy to understand, have a high degree of students' acceptance, are professional teachers, and ensure the teaching quality. Judging whether an institution is formal can be judged by judging whether it has a business license. Regular institutions will have a formal business license.