This is a novel about period sadomasochism. It tells the story of Shen Weixi, a concubine from a declining family. She was sent to Beilin by her mother country Nanjing as a substitute because she looked exactly like Princess Bai Yueguang Yunshu, the princess of Beilin Emperor Xiao Che who died young. She was forced to act as the shadow of a deceased person in the deep palace, enduring the uncertainty of the emperor, the scrutiny and beatings of the queen mother, the jealous bullying of the concubines in the harem, and the inhuman training of the strict nuns. In the extreme physical and mental torture and humiliation, she initially just wanted to survive, but was gradually forced out of her inner sense of tenacity and resistance, and began to struggle to survive in desperate situations in her own unique way. The cold emperor, who originally only regarded her as a substitute, also experienced unspeakable fluctuations and cracks in his heart during her repeated "unlike" unexpected collisions, and gradually fell into a love-hate relationship with the substitute himself and self-destruction.
