Minister Li Yanguo betrothed his daughter Xiuying to Wang Yu's son Yulin. Xiuying's cousin Gu Wenyou coveted his cousin's talent and beauty, and arranged with the matchmaker to forge love letters and steal Xiuying's jade hairpin to falsely accuse her of infidelity. Xiuying was humiliated when she passed by, but the truth was revealed after Yan Guo interrogated her. Yulin went to take the exam and admitted her mistake to Xiuying while holding a phoenix crown.
This book is an annotation of the story background of the opera play "Jasper Hairpin", and the important plots are adapted from the blueprint.