The class time is basically arranged on Saturday or Sunday, but generally it will be divided into stages. For example, this weekend, this group of professionals went to class, and the next weekend, it was another group of professionals. When they have classes, generally speaking, not all the staff will have classes on the same weekend. The school has arranged flexible teaching methods, giving teachers some rest time and giving everyone some rest time. Usually, I have a class every other week, usually two weekends a month, and the rest of the time I look at my own requirements, so that I can create a learning atmosphere, not only on weekends, but also on weekdays. Then, after studying, if you don't understand anything, you will go to school with questions and ask the teacher on weekends. When writing papers in the future, this pattern is basically the same.