If you really want to go to Korea, there are many good schools. However, the requirements are different. Sky's three famous schools (Seoul, Yonsei and Koryo) require not only Korean scores, but also good English. The requirements of the top 20 will be lower.
First of all: Generally, when you arrive in Korea, you will learn Korean for a period of time, depending on your level. It usually takes about a year. During this period, you have to take topik (Korea and Ability Examination), and you can enter the undergraduate course by passing Band 4. However, there are also many bad schools that can enroll students at the third level and even have no results. It is recommended to go to the top 20 schools, at least a well-known school spirit professor or something like that will be better.
And it is very important: major, what major you want to study, and what job you want to find in the future should be considered. Major is very important.
Third, if you are studying in South Korea, you should go to Seoul, followed by places like Busan, Incheon and Gyeonggi Province. Because there is a big gap in the development of South Korea, if you want to have some international experience, it is better to stay in the capital circle. In other places, even Daegu, the third largest city, Daejeon, the fifth largest city and Gwangju, the sixth largest city, are in ruins.
Fourth, recommend schools.
Seoul: Seoul National University of Korea, Yonsei (these three universities have high entry requirements but the highest comprehensive strength), Sejong (with a good major in hotel management), Sungkyunkwan (with a good geographical location, which is the world of young people nearby), Hanyang (with strong science and engineering), Korea Foreign Studies University (the best foreign studies university in Korea), and Qingxi (actually not very recommended, Because it is the most expensive university in Korea, Hony (the best art college in Korea), Central (the best performing arts university in Korea), Tankoo (strong medical degree), Xijiang University (strong management course), Jianguo University (convenient for shopping and eating nearby) and Ewha Women's University (only for girls) are called the cradle of the President's wife. It is worth mentioning that the area surrounded by Yonsei University, Ewha Women's University, Xijiang University and Hony University can be said to be the place with the largest number of young people in Korea. There are many nightclubs, restaurants, cinemas, bars, ktv Internet cafes, shopping malls and small shops, which will enrich their spare time, but also make them easy to relax.
Busan: National Busan (second in the country), Fukuoka, Korea Ocean, Busan Foreign Language (first in foreign languages).
Daegu: Just Gyeongbuk University.
Universities in the Capital Region: Incheon University, Renhe University and Shuntian Township University (although in Asan City, it is the outermost university in the Capital Region, with good medicine).
Daejeon: Korea Institute of Science and Technology (KAIST, this is really a university, and it is the strongest university in science and engineering in Korea)
Gyeongsangdo: Pohang University of Technology (in many rankings, Pohang University is even higher than Seoul and is one of the top universities in Korea)
What's more, almost every university in South Korea now has a large number of compatriots studying, so I suggest choosing a school with fewer people in China. After all, the language environment is very important to go there to learn Korean and go to college.
Finally, if you choose to study in Korea, it is suggested to consider the following points: location, major, admission requirements, and cost (the capital circle is of course more expensive than other places, but relatively speaking, there are more opportunities). I hope you can choose a suitable university and have a good way out.