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She was made up with exquisite makeup, put into a wooden box and sent to her eldest sister's new house. She took her eldest sister's place to be with her brother-in-law Dingnanhou Crown Prince... She was unconscious before daybreak and was given poison... She was unknown during her lifetime and died quietly...

She was originally the third wife of the uncle's house, but on her eldest sister's wedding day, she was drugged by her elder sister and sent to her new house... Before dawn, she was unconscious and was given poison again... When she woke up again, she became the unpopular seventh lady of the Duke's mansion. What's even more shocking is that the seventh lady looks exactly like her! The struggle in the back house was treacherous, and she was frightened every step of the way. Fortunately, she met the Crown Prince Yan who came to help him many times, and worked hand in hand with him to uncover the mystery of her life experience...