The narrator introduces us to a young woman named Gu Yuyan. She is the daughter of a wealthy man. The narrator tells us that she is the wife of a young man named Ansheng. Ansheng is a man who has lost his memory. The young woman, who is called "Xiao Yuyan," tells the narrator that the first time she met Ansheng, he had forgotten his own name. He had lost his knowledge and his love for her. She tells the young man that she had fallen in love with Ansheng after he had changed his name from "Gu Yuyan" to "Ansheng" . She asks him to write her a letter to tell her the story of their love.