What kind of card?
Cards that are made to celebrate special occasions.
That makes no sense, then it should be "cards!" No one would be selling a single card if that type!! I put cards;it was marked wrong.
Maybe she's an artist whose spent a week designing a card that she sells today to a publisher
What kind of things does the word thiệp refer to. She sells her card? Can't guess what "card" refers to.
Her social security card...