If the paper is uploaded to Baidu library, it will be included in the database, and the duplicate check will definitely fail, so Xiao M has to modify the paper himself.

In fact, in such transactions, students' information security and consumers' rights and interests cannot be guaranteed. The purchase of weight loss can only be done through WeChat, without the supervision of a third-party platform. If there is a dispute, the other party will publish the paper, and there will be no third-party customer service and refund procedures.