South Korea's "city of the sky" is home to the upper class of South Korea. They received a good education, mainly from the three most famous universities in Korea: Seoul National University, initials S; Korea University, initials K; Yonsei University, the initials Y, the initials of the three universities together are sky, which means "sky" in English.
90% of South Korea's top political leaders are from sky, which means that if you don't graduate from these three universities, it will be difficult to step into the top political leaders in South Korea. Desperately, more than half of the people, not only in politics, but also in business, are from SKY, which has solidified the relative class in South Korea. Sky students have their own aura and higher-level contacts, so they gather into a group to control the political and business circles in South Korea.
But after all, these people are only a few, and most of them are the poor at the bottom. Since they were born, they have been working for the chaebol in disguise. The annual sales of these chaebols account for half of South Korea's annual GDP, and their business covers almost every field of life, so small companies have no room for survival in South Korea.
If you want to work in a big company, you must have a high degree. Therefore, Korean children have to go through purgatory-like learning since childhood. In order to cultivate their children, parents spend most of their income on their children's extracurricular tutoring classes. Finally, when they grow up, they have to sharpen their heads in the companies of the rich, work hard and accept the exploitation of the rich. This hellish life has led many young people in South Korea not to get married and have children, so South Korea has become the first country with zero birth rate.