1. Waiting for the organization to screen, that is, open the registration invitation from time to time. The last invitation was 12.28, and this time it was at noon on March 9th 12. Business hours are uncertain, so hurry up. 2. An acquaintance introduction is an invitation to sign up. It's risky. After the invitee has problems, the inviter will be affected, but this is the fastest way to become a man of insight.