I don't know if such boxes are given in Christian weddings as invitations, or only in China, but my dad has received four such boxes. The boxes are so pretty.
I wanted to show these boxes. They give chocolates like Ferrero Rocher and Kisses in it.
One is tin, and other is made of paper.
It has enough space for keeping small things.
I guess these might be names of the couple written in Chinese.