Recently, a large number of students in teaching and training institutions gave feedback, and some criminals pretended to be staff members of teaching and training institutions to send text messages, claiming that they could get a refund of fees. Many educational institutions also encountered similar situations. According to the verification of Tanzhou Education, this is actually a new fraud routine under the banner of giving students a refund. Inducing students to join QQ group is only the first step in the whole process. Since March this year, a number of teaching and training institutions have issued statements to remind students to beware of fraud.