Autoplay is a convenient function provided by windows to users. When a mobile device is connected to a computer, it will scan the device, allowing users to choose which way to open it, or they can choose to open similar files in the same way every time in the future. However, online college courses cannot be played automatically, which is to prevent the behavior of brushing classes.

Online universities usually implement flexible academic system, allowing students to freely choose the study period. For example, the National People's Congress Online School stipulates that the starting point of high school is junior college and junior college, with a schooling period of 3 years, a study period of 2-5 years and 80 credits; The starting point of high school is five years, and the study period is 4-7 years. 160 credits. Network universities need students to have strong self-control and autonomy, because different from traditional teaching methods, distance education mainly means that students click on network courseware (or CD-ROM courseware) to complete course learning, submit homework or communicate with teachers by email or posting, and arrange centralized face-to-face lectures according to students' specific conditions.