Yuán-period 元 Khitan-aristocratic Chief Councillor, scholar of Inner-Asian historical geography, and son of the founding Mongol-administrative architect Yēlǜ Chǔcái 耶律楚材 (1190–1244). Zì Chéngzhòng 成仲; hào Shuāngxī 雙溪 / Zuìyǐn 醉隱.
Lineage. Ninth-generation descendant of Yēlǜ Bèi 耶律倍 (899–937), the Liáo Dōngdānwáng 遼東丹王 (crown prince of the Liáo founder Tàizǔ Yēlǜ Ābǎojī, the great Liáo scholar-of-Hàn-culture who defected to HòuTáng). Son of Yēlǜ Chǔcái 耶律楚材 (1190–1244, zhōngshūlìng under Tàizōng Ögödei Khan), the principal Hàn-administrative-Confucian architect of the Mongol regime under the second Khan.
Career. Talented in equestrian-archery from youth. Accompanied Xiànzōng Möngke Khan on the Sichuan campaign, earning meritorious deeds. Three terms as Yuán Zhōngshū zuǒ chéngxiàng 中書左丞相 (Left Chief Councillor of the Imperial Secretariat); architect of legal codification (dìng fǎlìng) and court ceremonial music (zhì yǎyuè). Posthumously promoted Yìníngwáng 懿寧王 with shì Wénzhōng 文忠 (“Cultured and Loyal”). Yuánshǐ j. 146 (paired with father).
Literary network. Close associate of [Yuán Hǎowèn] 元好問 and [Lǐ Yě] 李冶, both leading JīnYuán transition Hàn-Confucian scholars.
Migration sequence (preserved in his collection’s poem-annotations): Liáoshàng 遼上 → Yīwúlǘ 醫無閭 → Hélín 和林 (Karakorum) → Wěitái 隗臺 → Jǐnyún 縉雲 (final retirement at the Wǔhú biéyè 五湖別業).
Inner-Asian philology. Major contributor to Yuán-period Inner-Asian historical geography and ethnonymic philology. His on-site examination of the Kül-Tegin stele (Karakorum, Táng Míng-huáng-inscribed Quētèqín bēi 闕特勤碑) proves that the Xīn / Jiù Tángshū’s writing tèlè 特勒 is erroneous (correct: tèqín 特勤). His notes on the Chǔyuè 處月 and Dīnglíng 丁零 are foundational Inner-Asian ethnonymic philology.
Other historiographical contributions. Preserves Jīn-period palace-anecdote material on HǎilíngWáng and Zhāngzōng (in Qiónglínyuán fù and Lónghégōng fù) absent from the Jīnshǐ; preserves Beijing topographical material absent from Dìjīng jǐngwù lüè and similar gazetteers.
Within the Kanripo corpus. KR4d0458 Shuāngxī zuìyǐn jí 雙溪醉隱集 (撰).