Because the country’s current education policy is

Teacher in the first grade of primary school: Without the Communist Party, there would be no new China. I love Tiananmen Square in Beijing...

First-year university teacher: Don’t defecate in the open, don’t write graffiti in public places...

In order to meet educational needs

So, if the primary school classrooms hang some heroes and celebrities with outspoken words, and the students are familiar with the content on the walls, they will be considered qualified in education; while in university classrooms, only four white walls are enough, as long as there are no walls on the walls within a month There are few words of praise inside...