"Snow Flower and the Secret Fan" is a historical novel by Lisa See that explores the deep friendship between two women, Lily and Snow Flower, in 19th-century China. The story is set against the backdrop of the Hunan province and delves into the practice of nu shu, a secret writing system used by women to communicate. The novel highlights the challenges faced by women in a patriarchal society, including foot binding and arranged marriages. As their lives unfold, Lily and Snow Flower navigate love, loss, and betrayal, ultimately revealing the strength of their bond through the trials they endure.