It is 10:30 p.m. and students at the elite Daewon prep school in Seoul, South Korea are cramming in a study hall that ends a 15-hour school day.

• 晚上10：30南韩首尔大元外国语高等学校这所菁英学府的学生，还挤在自修教室里死记硬背，他们刚结束学校每天长达15个小时的课程。