QQ mailbox can put papers on it, and then QQ mailbox will roughly compare with other papers to calculate the duplicate checking rate. Those with high duplicate checking rate will be judged as plagiarism.
QQ mailbox is a mailbox product launched by Tencent in 2002, which provides users with safe, stable, fast and convenient mail service. Free value-added mail service has been provided for more than 654.38 billion mailbox users.