What do you mean by handing out matches?

Expression packs indicate celebration, blessing or expressing love, etc.

"Matchmaking" refers to "sending rockets", that is, sending "rocket" expression packs or "rocket" pictures in online chat. In some chat software, such as WeChat and QQ, some emoticons or pictures can be used to express emotions or intentions. Among them, "rocket" is usually used to express celebration, blessing or expressing love.

When people want to express these feelings in chat, they will send "rocket" expression packs or "rocket" pictures to express their feelings.