Achievements and abilities
Students recruited by Seoul National University should have many qualities, among which achievement and ability are the most basic requirements.
Written confirmation
Students must have written evidence to prove what they have done and what impact they have had on society.
Charitable activities
It is very important to do something for charity.
Korean language requirements
For foreigners, it is good to have high English scores. But Korean must reach CET-6 or above. I suggest learning Korean for a while and taking a CET-6 certificate.
Written confirmation
Having written proof of participation in social activities can improve the success rate of application.
Ancient Korean major
Korean majors in Korean universities learn ancient Korean (equivalent to China's classical Chinese), which is not a common communication language.