1. Check the member ID card: find your own member ID card and check the above information carefully, which will record the time, place and other related information. If you don't know how to get or find your own League membership card, please ask the person in charge of your unit or organization for help.
2. Consult the Youth League branch where you work: Communicate with the person in charge of the Youth League branch where you work, and they will know the specific time and relevant information of your joining the All-China Youth Federation. Provide your own personal identity information for verification, and try to prepare the relevant documents (identity certificates) that need to be provided.
3. Inquiring about the application for joining the Party: I have filled out the Application for Joining the Party of China Production Youth Team (hereinafter referred to as the Application for Joining the Party). You can find this document and read it carefully. Forms usually contain expressions of willingness to join organizations in the past few years and related data records, which can be used to determine the exact date and other relevant information.