In our school, we use the internet to attend classes in the dormitory and hold Tencent conference. The teacher himself will appear, but the students are afraid to turn on the microphone and camera and still concentrate on listening to the teacher. The teacher compared PPT, and I was taking notes carefully. However, students' attendance will be checked from time to time to prevent students from fishing in online classes. Before class, the teacher arranged a network major. I finished my homework in time and submitted it to the teacher. A class passed like this. Sometimes the internet speed of school is not as good as that of home, and there will be a jam on the internet, and I can't understand what the teacher said, which is very troublesome and has both advantages and disadvantages.