I have set up China Unicom Family Network, and it feels pretty good. I want to add a few more people to it, how do I do it?

The subscriber initiates the command and edits the text message "Add Qingqing.com #55X mobile phone number" or "zjqqw#55X mobile phone number" to 10010, and then the process can be completed. The initiator is the user who initiates the establishment of a family network and can perform any operations on the family network, while members can only operate on themselves. Up to 8 members can join China Unicom Family Network.