I remember reading a book about Madame Mao/Jian Qing when I was taking a class in Chinese history. I can't remember the name of the book, but I think it was more of a straight-up biography and not a novel.

I remember being fascinated by the story of her early years, up until she married Mao. What rosalux says above, about her constantly transforming herself. I may have to check out this book.