Xu Shupi is an author about whom little biographical information survives in Chinese classical sources. The publicly available material is limited, and his courtesy name, native place, dates of birth and death, and official career cannot be reliably established. According to library records, two works are attributed to him, the representative one being Shixiao lu (Records of Small Knowledge). The work is catalogued as by "Xu Shupi of the Song dynasty," though the attribution of its author's period remains uncertain, and readers should cite it with caution. In terms of subject matter, Shixiao lu belongs to the category of miscellaneous notes and jottings, dealing largely with observations, miscellaneous records, and reading notes; its classification touches on both prose miscellany and Eastern philosophy, suggesting a style that ranges across classical learning and varied observations. Overall, Xu Shupi's writings consist mainly of short, informal notes and records, plain and concise in style rather than systematic theoretical construction. Given the scarcity of surviving documentation, the influence and transmission of his works require further investigation.
