I've had some random Amazon items show up addressed to me, but I didn't order them, and I think that was part of a scam, but I never fully got my head around ho

I've had some random Amazon items show up addressed to me, but I didn't order them, and I think that was part of a scam, but I never fully got my head around how it works. These are Amazon shops in China that don't want to say they're in China so they send returns to other US customers. I got sandals this way with a print out saying "return them to this address".