1. Ask the relevant person in charge of the class or school: If students find problems in the class or school, they can contact the relevant person in charge of the class or school first, such as counselor, class teacher, student union, etc. , and ask them for specific information to get relevant information about the complaint.
2. Search through campus network, social software and other platforms: If you already know your classmates' names or contact information, you can search through social software such as campus network, QQ group and WeChat. You can post news in class groups and departments groups, find relevant students and ask them if they have detailed information about the complained items or businesses.