Tàizōng 太宗 of the Táng — Lǐ Shìmín 李世民 (597–649) — second emperor of the Táng dynasty (r. 626–649), and the principal architect of the early-Táng Zhēnguān zhìzhì 貞觀之治 (“the rule of Zhēnguān”). The temple-name Tàizōng and posthumous Wénhuángdì 文皇帝 are conventional. He came to the throne via the Xuánwǔmén 玄武門 incident (626) in which he killed his elder brother the Crown Prince Lǐ Jiànchéng 李建成 and his younger brother Lǐ Yuánjí 李元吉, and pressured his father Gāozǔ 高祖 (Lǐ Yuān 李淵) into abdication. His reign saw the consolidation of the Táng over the Eastern Tūjué 東突厥 (630), the establishment of the institutional framework of Táng rule, and the patronage of the Wǔjīng zhèngyì 五經正義 classical-canon project under Kǒng Yǐngdá 孔穎達. His own writings include the Dì fàn 帝範 (KR3a0016), composed in Zhēnguān 22 (648) for the Crown Prince Lǐ Zhì 李治 (later Gāozōng 高宗); the Wǔ jīng dìnyǔ 五經訂議 (lost); and a substantial corpus of memorials and prefaces. The standard primary sources are Jiù Táng shū j. 2–3 and Xīn Táng shū j. 2 (本紀); the systematic record of his governing maxims is Wú Jǐng 吳兢’s Zhēnguān zhèngyào 貞觀政要. CBDB has no entry for Táng emperors as such.