"I can't imagine that there is no advertising wall in the school." Sun Yuan, a 20 18 undergraduate student at Nanjing University, said.

With the gradual decline of BBS, students moved their dissatisfaction with life to Zhihu, and campus life came into public view. However, between BBS and Zhihu, some schools have developed this third path: the advertising wall.

On the one hand, the iteration of technology makes the campus forums of some universities show a declining trend; On the other hand, public platforms such as Zhihu and Weibo are directly related to public opinion. Some non-social problems in students' daily life are not suitable for discussion on public platforms. As a result, students from all schools spontaneously set up a virtual community "advertising wall", which became a gathering place for students in our school to vomit.