First, Korea itself is a low-end developed country, and many Koreans go to Europe, America, Japan and China to study. Although South Korea's educational ideas and methods have been imitating Europe and America, there is still a long way to go. The ranking of study abroad circle is US > UK > Europe > Australia > Japan >; South Korea
Secondly, South Korea's development and prospects are far less than Chinese mainland's. South Korea's domestic market is small and its industrial transformation is slow. It doesn't have many world-class technologies like Europe, America and Japan, and it doesn't want New Zealand and Australia to have comfortable living conditions and immigration policies. Moreover, Korean industries overlap with China, and China will surpass them sooner or later.
Third, the cost of studying in Korea is no less than that in Europe. If you can study in France and Germany at the same price, why go to a low-end developed country like South Korea?
Fourth, Korean has a low status. Korean is not spoken by as many people as dialects in some provinces, and it is not an international language. After learning Korean, it is destined to be used only to communicate with Koreans, which greatly limits its development.
Fifth, it is highly competitive. Maybe you want to be a translator after learning Korean well. I tell you, there are many Korean China people in Korea who have studied Chinese and Korean since childhood. The possibility that you want to surpass the Korean level of Koreans in just four years of college is about zero. However, after you graduate, you have to compete with Koreans for positions.
Sixth, Korean university diplomas have low recognition in China. After you return from studying in Korea, your diploma will not be recognized at all in China. Even if you graduated from top 10 university in Korea, your recognition in China is not as good as that of some 2 1 1 universities.