Good English can increase your chances of admission, but it is not necessary.
Seoul National University is the number one national university in Korea, and it has high requirements for students, so good English is a must.
2. There are two semesters a year, and the tuition fee per semester ranges from 1.77 million to 3.9 million, of course, won. Liberal arts are cheap, but science and liberal arts are expensive.
3. Go to your primary school and write another one in junior high school. If you can't find the real grade, you can write it casually and then just find a school teacher to sign it.
Busan University, to be honest, has very low requirements for foreigners. Compared with universities in Seoul, it is much simpler, and you can get into high school without good grades.
If your nationality is Korea, you should take the college entrance examination with Korean high school students.
4. Korean is taught by Koreans, and all classes are English+Korean. A few teachers can speak Chinese, which varies from person to person.
I checked the website of Busan University, and they have a design major.
As for Busan, Busan is quite good. However, compared with schools in Seoul, after all, the geographical competitive advantage is not great, so the entrance threshold is not high.
The strength of the school itself is good, and it is one of the best schools in southeast Korea.
Your first task in these three years is to learn English well. Korean universities like students who are good at English, followed by learning your high school subjects well. There is nothing else that needs special attention.
6. Foreigners have to take an exam, but the content of the exam is very simple, mainly a Korean exam.