In the turbulent Shanghai of the Republic of China, the ten-mile foreign market was full of bizarre things, and beneath the ecstasy were the desires and depravity of human nature. "Rouge" tells the story of a Suzhou woman named Liu Ruyan who was sold into the most prestigious "Hua Xiangrong" brothel in Shanghai because of her family's financial difficulties. With her outstanding appearance, talent and proficiency in music, chess, calligraphy and painting, she soon became the oiran. However, behind this glamor is her humiliation and struggle as a "commodity", as well as her helplessness and wisdom in dealing with all kinds of people - warlords, businessmen, revolutionary parties, and gangsters. The novel will provide an in-depth analysis of how Liu Ruyan uses her own methods to protect herself, find dignity, and make choices between love and justice, life and death in the torrent of the times. She fell in love with someone she shouldn't have loved, and got involved in a thrilling political struggle. In the end, in the whirlpool of love and hatred, she revealed the tragedy and unyielding soul of women of that era.