There are many universities all over Korea. Jeonbuk National University is very good, but this statewide university is a private school and is not famous in Korea. I don't even know my major.

Because it is far from Seoul, tuition and living expenses are definitely much cheaper than Seoul. About 20%-30% cheaper. The specific tuition fees should be checked on the school website.

A meal,,, depends on what you eat. Anyway, there are not two or three thousand here in Seoul. (converted to RMB 20-30 yuan)

There are accents all over the state, but it's better than places like Busan Jeju Island. If you have classes at school, it should be no problem. Only in the street.