Jung Chang is the author of the best-selling books Wild Swans: Three Daughters of China (1991), Mao: The Unknown Story (2005 with Jon Halliday), Empress Dowager Cixi: The Concubine Who Launched Modern China (2013) and Big Sister, Little Sister, Red Sister: Three Women at the Heart of Twentieth-Century China (2019). Her books have been translated into more than 40 languages and sold more than 15 million copies worldwide.