She is the daughter of a medicine merchant and is gifted with the ability to read memories through the smell of medicinal herbs (touch angelica to see the souls of the dead on the battlefield, smell mint to learn the secrets of the boudoir). She was involved in a serial poisoning case. The poison used by the murderer actually smelled of the memory of her fiancé, who claimed that he had never made poison...
Concept: Use the smell of medicinal materials as a memory carrier, and the process of solving crimes is also an emotional decryption