Hello brothers

I'm planning a trip back to HK in March next year and starting to do the research on all the changes since I was last there in 2017.
Reading through the forums it seems Telegram seems to be one of the more popular routes for communucations.
What I'm trying to get my head around is all code in emoji. Cannot seem to find a thread, or more helpfully a sticky, to assist with this.
Any help with the common emoji would be really appreciated.

Thanks

I assume recycle means 69??
For example: 服務有：♻️