Ah Tan's life plan is very simple: to be an embroiderer in the Jiangnan water town for the rest of her life, save money, get married, and live a stable life. As a result, with an imperial edict, she was selected into the palace and became the most inconspicuous little palace maid in the Shangyi Bureau. The good news: With her lost double-sided embroidery, she stood out from the crowd of palace maids, won the favor of the Queen Mother, and received generous rewards. Bad news: The Queen Mother turned around and "lent" her to her most popular rival, Concubine Hua, to give her haircuts as a gift. Worse news: While adding the last stitch to the imperial concubine's dress, A-tan discovered that this batch of specially supplied "gold and jade threads" had been tempered with a "blood sealing throat" that can cause skin ulcers and respiratory failure. And the whole dress was missing just this last stitch of hers. Now it's good. After the embroidery is completed, she will be the murderer of the imperial concubine; if the embroidery is not completed, she will be the sinner of neglecting the imperial concubine. Either way, it's a death. Everyone in the palace said that Concubine Hua was arrogant and domineering and regarded human life as nothing. But only Atan saw that this noble empress would quietly pull out her newly born white hair in front of the mirror late at night when no one was around. The seemingly loving Queen Mother treated her as her own granddaughter, but the incense she lit in the Buddhist hall was actually the Xiji Pill that can make women infertile. There is also the cold-faced commander of the imperial army who always "happens" to pass by near the crime scene. Halfway through the investigation, it cannot be said that the purse pattern she embroidered is inherited from his family... Atan: "..." Help, this harem is more complicated than the double-sided embroidery she embroidered! She is just an ordinary migrant worker, why does she need to know so much! She just wants to embroider in peace and leave the palace after saving enough money.