It means that when the qq account is frozen due to being reported or other reasons, compulsory safety education or unfreezing operation is required. When a qq account is reported to be illegal, such as fraud, spreading malicious information, etc. Tencent will freeze the account according to the situation. At this point, the user of the account needs to go through a series of verification and unfreezing operations before he can reuse his account. These operations include filling in personal information, uploading identity documents, face recognition and so on. To ensure that the account is really his own.