Prefect Pei, the elder brother of Pei Yingxia. He is described as handsome with an ethereal, scholarly air. He invited Yao Shu to accompany him to the Lantern Festival and hoped she would guide the yamen's inexperienced coroners. Fu Xiujin clearly dislikes him and warned Yao Shu to avoid him, suggesting Pei Shixun is 'no good man.'
