It depends on what career you want to pursue in the future. The mathematics department of normal university is good, but it is limited to basic education. I'm studying in the math department now. Even after finishing graduate school, most people are still proper teachers, so if you want to be a primary and secondary school teacher in the future, Normal University is a good platform and has a good reputation in many good middle schools in China, but if you don't want to be a teacher, it will greatly limit your employment.