The experience of this half-year online course has made me deeply realize the advantages of online learning.First of all, the Internet allows us to have classes without going out, which can save us a lot of time that should have been wasted on the road.Secondly, online teaching makes playback possible, which enables us to watch the course at any time.Finally, due to the use of the network, the embarrassment of looking at each other is avoided, and the classroom atmosphere is more relaxed and the interaction is more active.