Charm Item Number: Edz4305 from the MOA: University of British Columbia
Metal charm with overall ovoid shape, scalloped edges, designs and four Chinese characters on both sides, and double lines at the edges. Two loops at the top with a rectangular slot below them.
Probably used for hanging or display. (Larson, David) This is called lianxinsui, "the locket that connects hearts", and is worn by children, usually boys, on a silver chain. Given by their parents or grandparents as an ornament or amulet. (Li, Min)