Search Baidu for "China Academic Misconduct Document Detection System -CNK Duplicate Search Entrance".

2. select "select duplicate checking system".

3. Take "duplicate checking of undergraduate dissertations" as an example. Then click "Query Now".

4. select "query now" again.

5. select "title of paper, author of paper" and enter relevant information.

6. select "attribute classification" and take undergraduate thesis as an example.

7. select "word document of graduation thesis" to upload. Select the payment method, enter the mobile phone number, and then click "submit for inspection" to check the repetition rate of the paper.