The female protagonist, also known as Miss Qin or Second Miss Qin. She is the legitimate second daughter of the Duke of Qin. She is sharp-tongued, intelligent, and actively investigating murders. She is getting married to Shen Lingyun, the Third Prince. She is described as carefree and clever, coming up with strategies like feinting and stirring grass to startle snakes. She felt wronged about having no dowry left after her father seized her mother's dowry. She is Sui Zheng's younger sister.
