石女是咋回事?答：石女是先天性无阴道无子宫，但有女性一般性特征，俗称石芯子或双无。石女很容易发现，因为她不来月经，没法性生活。
What happened to the stone girl? Answer: shi nu is congenital do not have vagina to have uterus, but have female general characteristic, commonly known as stone core or double do not have. It's easy to find out because she doesn't menstruate and can't have sex.