After visiting the Asian Art Museum to see an exhibit on Shanghai years ago, Amy Tan picked up a book in the gift shop about courtesans there in the early 20th century.
"A few days later, while leafing through the pages, I came across a photo of 10 women, which stunned me," Tan writes on her website.
"The caption said: 'The Ten Beauties of Shanghai.' They were courtesans who had won a popularity contest in 1910. Five of the young women are dressed in the same clothes my grandmother is wearing in one of my favorite photographs of her."
This is how Tan learned that her beloved grandmother, the woman she'd long seen as her muse, probably worked in a brothel. It stopped her in her tracks and led her to completely change the course of the novel she'd been working on.
The result is "The Valley of Amazement," set at the dawn of the 20th century, Tan's first novel in eight years.
Like Tan's "The Joy Luck Club," it's the story of a tense relationship between a mother and daughter, and of the clash between East and West.
But this time the central character is forced to work in a Shanghai brothel, so for the first time Tan writes explicitly about sex.
During her 25-city book tour this month, Tan appears at Copperfield's in Petaluma on Dec. 2 and at Book Passage in Corte Madera on Dec. 7. Here are excerpts from an interview with her.
Q: How does your writing help you learn more about yourself?
A: Everything I'm writing about has to do with identity, self-identity. It has to do with the meaning of my life, with who I am and what I'm looking for. The predominant influence would be my mother, and that accounts for why a mother figure appears so often in my books. I cannot seem to get away from it.