Koreans at the library

In this picture, my friend and I are studying and doing math homework at 3 am. At Georgia Tech library a lot of Koreans can be found at midnight. I sometimes wander around the library to meet Korean people there.
I attended high school here in the United States, but I heard a lot about how Korean high schools are. Korean high school students study almost everyday for all day and sleeps about four hours a day. Here at Georgia Tech I met many international students from Korea and found out that there are actually many people who just came from Korea.
It is like culture how Koreans are studying late at night and pulling all nighter easily to study. Those Koreans are used to stay till very late and pull all nighter, and now they still behave similarly here at Georgia Tech. I stay in library late at night quite often and I see many Koreans staying in library after like 3 or 4 am. It is Korean culture how we consider studying is the most important thing to do for students. Parents taught them that way and their hard-workings can be shown in the library late at night.