Changchun University has a high salary. The reason is that teachers have high teaching experience and qualifications and different resource allocation.

1. Teachers' teaching experience and qualifications are high: Changchun Xueda education teachers have high teaching experience and qualifications, while Boda education teachers have low teaching experience and qualifications.

2. Different resource allocation: Changchun University education may have invested more manpower, material resources and financial resources to improve the teaching quality of teachers and the learning effect of students, thus giving them higher salaries. The lower the teaching subjects and difficulties of teachers in Boda Education, the less teaching skills and knowledge they need.