In the middle school of this school, Li Dan, an English teacher, and teachers of mathematics and Chinese have paid lessons seriously. Usually, the classroom is basically self-study. Teachers don't talk about the key points and want to listen to the key points, so they have to go to the cram school they run. In the cram school, they will give students mid-term and final exam questions, creating the illusion that students' mid-term and final exam results will improve. As long as a senior high school entrance examination, students' grades in Li Dan will plummet!