In the university stage, one class lasts 45-50 minutes, and 48 class hours are 48 classes. If there is no class on Saturday, there are basically 10 classes a day, that is, five classes (two classes in college are one class, and teachers usually have one class), that is, two classes in the morning, two classes in the afternoon and one class in the evening. Too many! I suggest you don't be anxious when you start your freshman year. You're not used to it. Each class in the university is rich in content and fast-paced, so it is more appropriate to teach within 40 hours a week (no more than four major classes a day), so that you can review and relax in the evening and weekend, and the learning effect and efficiency are guaranteed.