Canned Quail Eggs

At the Oriental Market yesterday, I saw canned quail eggs.

I didn't want to buy them without knowing more about what I would be
buying. Almost all the writing on the can was something other than
English, so I couldn't read it.

Are these eggs in shells? Hard boiled? Pickled? No shells?

What type of meal would they be suitable for?

I love to try new things, but I'd like to know a little about what I'm
trying.