You can't redo the computer version, but you can open the web version. It is recommended to use mobile phone WeChat to do it. I PhD supervisor is an open class service software that can be used by both teachers and students. Teachers can manage classes, learn lectures online, participate in teaching interaction, collect excellent course videos and participate in knowledge contests. It is a national online education+teaching management platform focusing on pan-business majors, and is committed to teaching services and skills improvement. Participating in open classes, discovering excellent teachers, popularizing excellent teachers and demonstrating teachers' teaching level are also opportunities to exercise personal teaching ability and observe and learn excellent teachers' teaching methods. We can observe higher-level open classes through the network.