In the recruitment of teachers, it is required that the majors studied are the same or similar to those applied for. What does this similarity mean for applying for mathematics?

The major studied is the same as or similar to the major applied for. Students who study mathematics can definitely apply for mathematics, but there is another thing that depends on whether your teacher qualification certificate is primary school or junior high school. If you are in primary school, you can only report to primary school, and if you are in junior high school, you can do it in primary school and junior high school. If it is a high school, you can also apply for mathematics in turn. I hope it helps you!