In a pile of sand on my balcony, a group of bees burrow into it every year, coming and going

Bees love it here, maybe your balcony is a little special. Don't keep them, these bees may be someone else's house, or they may be wild bees, which are not suitable for breeding.

It's not a bee! Is your waist particularly thin? Or is it smaller? Common bees are Italian bees, and Chinese bees can be farmed. You look at bee pictures on the Internet and that's the same no.

Are there any flowers next to that? Where there are flowers, there are bees.