It's true. It is true that Tik Tok's assistant paid for the scientific knowledge. It is a technical support service, which can help users of Tik Tok platform to quickly obtain relevant technical documents, operation guides, etc., thus providing technical support for developers. It also provides training services to help developers improve their technical level, understand the core knowledge of Tik Tok platform, make better use of the resources of the platform and provide better services for developers' applications.