Guangzhou University's geographic information system major is ok, not bad, not bad. Of course, the scope of employment may not be as extensive as other majors, but it mainly depends on how you study. You have a senior who used to study geography, but now she teaches in Zhuhai Middle School, which is not bad. There is a good middle school in Guangzhou, and I want to keep her when she graduates.
So it's important to see if you feel good.
Besides science and engineering, other majors in Guangzhou University are good, such as tourism management and international trade. I won't list them one by one.
It's troublesome to change majors. I think it is more troublesome to change majors than to be admitted to Guangzhou University. Ha ha laugh ... just kidding.
You'd better consult the teacher.