Jīn-period (12th–13th century) phonologist, zì Bóhuī 伯暉, of Sōngshuǐ 松水 in Zhēndìng 真定 (modern Héběi). fl. Tàihé era (c. 1201–1208). Author of the Wǔyīn jíyùn 五音集韻 KR1j0064 in 15 juàn (Tàihé 8 / 1208), the principal northern-line revision of the Guǎngyùn rhyme-book during the Jīn dynasty. Unlike the Lǐbù yùnlüè southern tradition (which kept the 206 Guǎngyùn rhymes intact for examination use), Hán’s book reorganises the Guǎngyùn / Jíyùn rhyme-classes by the 36 zìmǔ and 4 děng (the děngyùn phonological-grade matrix) and consolidates 206 → 160 rhyme-classes (merging 忝 with 琰; 檻 with 豏; 儼 with 范; 㮇 with 艶; 鑑 with 陷; 釅 with 梵). The Sìkù tíyào credits the work as the textual evidence that the seven-rhyme conflations later credited to Huáng Gōngshào’s Yuán Yùnhuì in fact already existed in the Jīn under Hán Dàozhāo. No CBDB entry.