Option 1:
Open the group chat, tap「...」in the upper right corner, scroll to the last member, tap the「+」 next to them, and select the contact you want to invite.
Option 2:
To join via Group QR Code, open a group chat, tap「...」in the upper right corner >「Group QR Code」> tap 「...」 from upper right > tap 「Save Image」 or 「Sent to Chat」. Share the QR Code to your friends, it will expire in 7 days.
Note:
●For groups with over 40 members, users will receive an invitation rather than being added directly.
●For groups with over 100 members, identity verification is required.
●Group chats can include up to 500 members, and any member can add others.