Would the network card teacher know when he was watching the live broadcast in the novel? Or will it show that I didn't watch the class? The answer to this question might vary according to the plot of the novel. In some novels, if the network was stuck, the teacher might notice that the live broadcast room would display "network failure" or similar messages, causing the teacher to be unable to continue teaching. In this case, students might receive a notification that they were not watching the live broadcast. In other novels, teachers may not be aware of the network problem because their attention is attracted by other things. In this case, the students might receive a notification that they were not watching the live broadcast, but the teacher did not know. In short, whether or not the network card teacher noticed the livestream depended on the plot setting.