How does the newly established boss of Meituan convey information?

Group sending: In the "My Friends" list, right-click a group and select "Send Message to Group Members" to send it to the group members.

Group sending of contacts: press and hold the name of the other party while pressing the Ctrl key, then select, then release the Ctrl key, right-click any selected contact, select "Send instant message to selected user", enter the content to be sent in the pop-up box, and click the "Send" button.