Xíng Kǎi 邢凱 (fl. c. early 13th century), zì Tíngjǔ 廷舉, hào Tǎnzhāi 坦齋. Of Wǔníng 武寧 (modern Wǔníng county, Jiǔjiāng prefecture, Jiāngxī). CBDB id 41205, with a fl. date of 1208. The Sòng shǐ contains no biography; the Shuōfū 說郛 attribution gives only “Sòng Xíng Kǎi compiled” with no rank or office. The Sìkù editors, working from internal evidence in his book — references to Lěng Shìguāng 冷世光 in the Chúnxī reign, to Gāo Bǐngwén 高秉文 and Jīng Táng’s 京鏜 attack on the eunuch Wáng Déqiān 王德謙 in Qìngyuán, and to Yáng Wànlǐ’s 楊萬里 Yì zhuàn (then “recently seen”) — date the work’s composition to after the start of Níngzōng’s reign (1194 onward), and identify Xíng Kǎi as a Wǔníng man on the basis of his Qiándào xīnmǎo (1171) reference to Wáng Níng 王寧, magistrate of Wǔníng, having his family enrolled there as lǐzhèng 里正 (ward-head).
The single surviving work is KR3j0046 Tǎnzhāi tōngbiān 坦齋通編 (1 juan), a bǐjì of textual and historical criticism on the model of Chéng Dàchāng’s 程大昌 Yǎn fánlù 演繁露 and Hóng Mài’s Róngzhāi suíbǐ. The Sòng shǐ Yìwén zhì and other catalogs do not record it; the present text is one the Sìkù editors recovered from the Yǒnglè dàdiǎn. He is otherwise unknown.