Lǐ Jì 李勣 (originally Xú Shìjī 徐世勣, then granted the imperial surname Lǐ as Lǐ Shìjī 李世勣, then taboo-altered to Lǐ Jì when Táng Tàizōng Lǐ Shìmín 李世民 ascended; zì Màogōng 懋功; 594–669) was one of the principal founding generals of the Táng dynasty, ennobled as Yīngguó gōng 英國公. Native of Cáozhōu 曹州 (modern Hézé, Shāndōng), he served four successive emperors — Gāozǔ, Tàizōng, Gāozōng — and was instrumental in the conquests of the Eastern Türks (630), the Western Türks, and Goguryeo (668). At the time of the Xīnxiū běncǎo (KR3ec004) project he held the office of Tàiwèi 太尉 / Yángzhōu dūdū 揚州都督 / Jiānxiū guóshǐ 監修國史 / Shàngzhùguó 上柱國, and his name appears at the head of the editorial supervising committee as 監修. CBDB id 143005; note CBDB has lifedates 678–747, which is anachronistic and refers to a different person (probably an entry-confusion); the historically attested Táng founding general Lǐ Jì’s lifedates 594–669 are firmly established in the standard histories (《舊唐書》 j.67, 《新唐書》 j.93) and followed here over the CBDB record.
For Lǐ Jì’s military career and political role, the principal English-language source is Bingham, Woodbridge, The Founding of the T’ang Dynasty (Baltimore: Waverly, 1941); see also Twitchett, The Cambridge History of China vol. 3 (CUP 1979), Twitchett’s chapter on Gāozōng.