During the Wanli period, Shen Qingci, the concubine of the Shen family who was the Minister of Household Affairs, was frail and sickly since she was a child, and was an existence no one cared about in the mansion. The aunt's mother is hypocritical and the aunt's sister is vicious. In order for the aunt's sister to marry into Prince Ning's palace, the family set up a vicious plan to switch Shen Qingci to a tyrannical official, destroy her innocence, and force her to become a concubine.
By some mistake, Shen Qingci was sent to the sedan chair of Xiao Jin, the famous and romantic Prince Jing. On their wedding night, Shen Qingci used his superb medical skills and insight into people's hearts to temporarily stabilize the situation, and decided to use Prince Jing's Mansion as a chessboard for his revenge. On the surface, she is the sickly and frail princess who lives in peace with the world, but secretly she uses a "mustard space" (a delicate machine box, not a fantasy space) left behind by her mother that contains countless rare medical and poison books to make a living every step of the way.
She first uncovered the evildoers in the house, and then planned to expose the evil deeds of her aunt and sister to the public, causing the Shen family's reputation to fall into disrepute. During this process, Prince Jing Xiao Jin, who seemed obsessed with sex and didn't care about her, "happened" to appear when she was in danger many times. He had already seen through her disguise, but he was happy to see how she, a little fox in rabbit skin, stirred up the turmoil in the capital, and took her under his wing as a sharp blade against the crown prince and other princes.
The two began to test and exploit each other's alliance, and gradually became sincere in the whirlpool of court intrigues and court battles. Shen Qingci's path of revenge has also changed from avenging his own injustice to helping Xiao Jin win the throne. When everything settled and Xiao Jin ascended the throne, he dismissed the harem and hired the country, only willing to enjoy the thousands of miles of rivers and mountains with her, a "sick-bone hibiscus".
