Feng Jiu, a modern Xianyu society animal, opened her eyes and became a concubine in the Yongning Hou Mansion of an imaginary dynasty whose father did not care for her and whose mother died young. What's even more outrageous is that she is bound to the "Voice Live Broadcast System" - all her inner complaints will be randomly broadcast for people around her to hear, but she can eavesdrop on other people's voices in one direction. Faced with the false and compassionate stepmother's fraudulent marriage and the evil plot of the concubine Bai Lianhua, Yi Fengjiu was submissive on the surface, but she was madly saying in her heart: "How dare you show off your acting skills to embarrass yourself?" "You want to use me as a stepping stone? Be careful! You sprained your foot!" Unexpectedly, these rebellious "voices" were all heard clearly by the current regent Shen Moyan who came to the Hou Mansion to "encounter". This prince, who is known for his cold and iron fist, is suffering from the fact that everyone in the court wears a mask, making it difficult to distinguish between loyalists and traitors. He raised his lips and smiled, extending an "olive branch" to the shivering little concubine: "This king needs a 'knife' that can see through people's hearts. Would you like to come?" From then on, Yi Fengjiu was the timid concubine of the Marquis's house during the day, and the regent's house at night. The "humanoid lie detector" relies on the micro-expression analysis, psychological proficiency and other skills rewarded by the system tasks, while crazily slapping opponents in the house to earn survival capital, while helping Shen Moyan identify enemies and friends, stirring up trouble in the court. When the BOSS finally surfaced with the intention of overthrowing the dynasty, Yi Fengjiu, who had the blessing of modern knowledge and systems, joined forces with Shen Moyan, who was strategizing, to stage an ancient version of "information dimensionality reduction attack."