No, WeChat official account and official website Cha are both products of the same company, and the database used is Vip, so there is no difference. Wip paper detection system is one of the platforms for paper duplicate checking in China at present, which provides services such as undergraduate paper detection, doctoral paper detection, paper title detection, submitted paper detection, report download, report verification, graduation paper management, homework management, etc. It adopts AI intelligent comparison technology, has a rich local text resource pool, and is committed to maintaining academic integrity and putting an end to academic misconduct.