Zhào Xībiàn 趙希弁 (fl. 1240s), a Sòng imperial-clansman of Yuánzhōu 袁州 (modern Yíchūn 宜春, Jiāngxī), self-styled himself “Jiāngxī cáogòng jìnshì, Mìshūshěng jiàokān” 江西漕貢進士祕書省校勘 in his prefaces. By generational reckoning he was a ninth-generation descendant of Sòng Tàizǔ 宋太祖 (r. 960–976). In 1249 (Chúnyòu 9, 己酉) the prefect of Yuánzhōu, Lí Ānzhāo 黎安朝, commissioned him to extend Cháo Gōngwǔ’s Jùnzhāi dúshū zhì against his own family library: Zhào produced the Fùzhì 附志 (1 juan) of supplementary entries and a Kǎoyì 考異 (1 juan) collating the Yuán 袁 and Qú 衢 recensions, then identified the additional material in the Qú recension as Cháo Gōngwǔ’s late additions and placed them in a separate Hòuzhì 後志 (2 juan). The combined Yuán-recension Dúshū zhì (4 juan + Hòuzhì 2 juan + Kǎoyì 1 juan + Fùzhì 1 juan) is the principal text of the work as transmitted in Sìkù.