The standard of hownet paper detection is that 13 characters are the same continuously, and 13 characters are 6 to 7 Chinese characters. Some students may encounter less than 6 words at the beginning, and think it is repetition, mainly because you know the last sentence 13 words continuously. The paper duplicate checking system of HowNet has a threshold. There will be errors when the same paper is tested at the same time. There are also errors in the results of the changes in the structure and content of the paper, but the overall difference will not be too great.