I'm not sure that the similarity of your paper in Wanfang Paper Test is 0, and whether you can pass the exam on HowNet. Because different paper duplicate checking systems use different databases and algorithms, the detection results will be different. Even if the similarity of your paper is 0 in Wanfang's paper detection, there is no guarantee that it will pass on HowNet.

HowNet has a larger database, including a large number of academic journals, dissertations and Internet pages, which enables it to detect more similar content and plagiarism. At the same time, the detection algorithm of HowNet is strict, so even if the similarity of your paper is 0 in Wanfang's paper detection, it is still possible to detect similar content in HowNet detection, leading to failure.

Therefore, it is suggested that HowNet be used for testing before submission to ensure the originality and legitimacy of the paper. At the same time, we should also carefully read the relevant regulations of schools or institutions to understand their requirements and standards for duplicate checking of papers, so as to better complete the papers.