Probably, the question about relationships is most important in the world. Different cultures mean different rules. Different people mean different relationships. All the relationships in South Korea are built according to principles of hierarchy.
Even in ancient times in Korea, the study of Confucianism played an important role. It was impossible to enter the military service, which in those days was considered prestigious, without knowledge of the fundamentals of Confucianism. And one of the principles of Confucianism is hierarchy and a special attitude towards elders. And, the senior is not always the senior in age, it can be the senior on a rank, on a post, etc.
Therefore, in Korea when you meet new people the question about your age is more important than the name. Since it is important to understand how to address your interlocutor: respectful "You" or you can go to the informal "You".
By the way, speaking about dating. 3 most important questions: Age, Name and Blood type. As for the age, we figured out, and as for the blood group, then it is important to understand whether you are compatible or not. Of course, today not all acquaintances are accompanied by such questions, and in the most cases, the blood group is asked when acquainted with the opposite sex, but still, sooner or later this question will be voiced.
In general, Koreans believe in compatibility in the blood group. Yes, and the nature of a person is determined by the blood group. And when you get a job, the resume has this point. But about employment, and about what it's like to work in a Korean company, I'll tell you next time.