There are formal thesis guidance institutions. Formal thesis guidance institutions are established by professional scholars or institutions, aiming at providing thesis writing guidance, academic consultation and editing services for students and researchers. These institutions have a senior academic background and rich experience in writing papers, which can help students avoid common mistakes in the process of writing papers, improve the quality of papers, and help clarify research ideas and improve research methods. These institutions also provide guidance on academic ethics and norms to ensure that students' papers meet academic requirements and norms, so there are formal paper guidance institutions. Mechanism refers to an organization, a system or a machine, in which the components are composed of two or more parts, each part has definite movement, cooperates with each other in function, moves and changes according to certain laws, and is combined in a certain way to complete some specific functions.