Su Yunxi, a modern society animal, unexpectedly transformed into an abandoned concubine in a cold palace. The original owner was gentle and cowardly, but she had a violent core hidden inside. In order to save her life, she was forced to become a double agent, dealing with the harem's plot while delivering news for the mysterious forces. When I met the autistic prince Xiao Jingyuan by chance, I wanted to avoid him, but I found that he was the key to solving the problem. Su Yunxi relied on modern knowledge to resolve the crisis: using common sense of hygiene to prevent poisoning in palace fights, using management thinking to rectify the palace, and relying on psychological knowledge to pry open the autistic male protagonist's inner defenses. Faced with the pursuit of the supernatural organization, the stern Taifu's difficulties, and the family's pressure to marry, she had a violent temper, fought against Green Tea, fought against powerful ministers, and protected the male protagonist. She abandoned the concubine in the cold palace and counterattacked, finally overthrowing the decadent harem, and restoring peace to herself and Xiao Jingyuan.