1. Buying/handling false certificates by improper means. A degree that can only be found in Xue Xin. Com are all true degrees. Everyone has one and only one certificate number. 2, claiming that he exaggerated the propaganda routine. Formal institutions do not sign academic degree agreements, but sign their own agreements. There is no substantive guarantee, and it is difficult to defend rights in later disputes. 3. The temptation of low tuition. Low tuition fees attract registration, and the later fees are more. Regular learning centers have the charging standards of colleges and universities, and there is no arbitrary charge. 4. Authorized learning centers in informal universities. The qualifications of false institutions are incomplete, and the post-study service is not guaranteed. The formal institutions have the authorization letter of enrollment from the institutions and the approval from the education authorities.