Zhāng Kǎn, zì Zhífū 直夫, hào Zhuōxuān 拙軒, was a Sòng minor official whose entire historical visibility comes from the patient detective-work of the Sìkù editors. He was the son of the Kāixǐ (1205–1207)-era chief minister and Privy Council Director Zhāng Yán 張巖 (d. ca 1209) — Hán Tuōzhòu’s 韓侂胄 ally in the failed 1206–1207 war against the Jīn, and consequently dismissed in disgrace — and the family had moved from Dàliáng 大梁 to Yángzhōu 揚州 and finally settled at Húzhōu 湖州 (Wúxīng 吳興) at the end of Shàoxīng (1162). Zhāng Kǎn himself served only as liquor-tax monitor at Bēnniúzhèn 奔牛鎮 (Chángzhōu 常州) and as deputy of Shàngyú 上虞 — small posts. His friends were the Jiānghúpài 江湖派 poets Zhào Shīxiù 趙師秀 (1170–1219) and Zhōu Wénpú 周文璞 (fl. early 1200s); his collection’s datable writings are in the Jiādìng (1208–1224) and Bǎoqìng (1225–1227) range, suggesting a floruit of roughly 1190–1240. CBDB (id 27791) gives no precise lifedates. His sole surviving work is the six-juan Zhāngshì Zhuōxuān jí 張氏拙軒集 KR4d0348, reconstructed from the Yǒnglè dàdiǎn by the Sìkù editors. The collection’s juan 5 contains the only substantial xíngshí (life-account) defending Zhāng Kǎn’s father Zhāng Yán against the Sòngshǐ condemnation.