Interesting Ancestor Story

Seeing how Monday is Tomb Sweeping Day in China, I did an English corner about Ancestors.  Canvassing the students for interesting stories about their ancestors, I was told of some having to change their names because they were from the wrong class, and of a wife who was made to marry the younger brother of her deceased husband.  The student, telling me the latter story, thought it was a case of incest when in fact it was simple a case of a woman being treated as property.