《Long piece》episode plot

Yan Xing (played by Tang Enxi), a concubine of the Yan Mansion, studied under the supervision of the Chief Prison Superintendent of the Ministry of Punishment since she was a child. She has acquired the skills to solve cases and can find out the answers hidden in the physical evidence through clues.Yan Xing was admitted to the Ministry of Justice and became a female officer, determined to find out the real murderer and uphold justice.However, because the third sister escaped from the marriage granted by the Empress Dowager, in order to save the family, Yan Xing had to marry her sister, and married Shen Du (played by Ding Yuxi), the chief minister of the Imperial Household.