1. Search for "China Academic Misconduct Document Detection System -CNK Duplicate Checking Entrance". 2. Select "Select duplicate inspection system". 3. Take "duplicate checking of undergraduate dissertations" as an example. Then click "Query Now". 4. Select "Query Now". 5. Enter relevant information according to the prompts. 6. Select "Attribute Classification" to take undergraduate thesis as an example. 7. Select "Graduation Thesis word Document" to upload. Select the payment method, enter the mobile phone number, and then click "Submit".

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China Higher Education Student Information Network (hereinafter referred to as "Xue Xin Network") is sponsored by the Center for Student Service and Quality Development of the Ministry of Education (formerly the National Center for College Students' Information Consultation and Employment Guidance) (hereinafter referred to as the Center). Xue Xin. Based on the large-scale data warehouse established by the center, com integrates information such as college enrollment, academic qualifications and graduate employment. The "Sunshine College Entrance Examination" information platform, academic information management platform, national postgraduate enrollment information network and mainland universities information network for Hong Kong, Macao and Taiwan have been opened, and more than 92 information systems, such as academic inquiry system, online verification system, online registration and admission inspection system for postgraduate students, postgraduate enrollment adjustment service system and online office system for academic certification, have been opened. Xue Xin. Com is the website for academic qualifications inquiry of the Ministry of Education, the designated website for sunshine project of college enrollment of the Ministry of Education, and the designated website for national postgraduate enrollment adjustment.