Shǐ Zhēng 史徵
Mid-to-late Táng Yì scholar of Hénán fǔ 河南府 (the Táng superior prefecture corresponding to modern Luòyáng). Lifedates not recorded. Not present in the Tángshū liè zhuàn; no inscription, no other corpus. The given-name graph is unstable in transmission: he is recorded as 史證 (taboo-avoidance variant in some Sòng-era prints), as 史文徽 (per Sòngshǐ Yìwén zhì, by graphic confusion of 徽 and 徴), and as 史之徴 (by graphic confusion of 之 and 文). The Sìkù editors fix the form 史徴 (= 史徵, with the variant 徴) and the dynasty as Táng, following the Yǒnglè dàdiǎn and Zhū Yízūn’s Jīngyì kǎo.
His sole surviving work is the six-juan Zhōuyì kǒujué yì 周易口訣義 (KR1a0009), the only surviving Yì commentary in the Táng kǒujué 口訣 (“mnemonic verse”) didactic format. The work survives only because it was preserved in the Yǒnglè dàdiǎn and rescued in the Sìkù compilation; eight hexagrams are missing in transmission. The Sìkù editors single it out as one of the five surviving pre-Sòng Yì commentaries (with KR1a0166 Jīng Fáng’s Yìzhuàn, KR1a0006 Wáng Bì–Hán Kāngbó, KR1a0007 Kǒng Yǐngdá, KR1a0008 Lǐ Dǐngzuò); his quotations of pre-Táng masters (Master Zhōu, Sòng Zhōng, Master Lǐ, Master Zhuāng, Master Zhāng, Zhèng Zhòng, Wáng Yì, Xún Shuǎng, Hé Tuǒ, Zhōu Hóngzhèng, Master Chǔ, Hóu Guǒ, Yú Fān, Lù Jì) preserve material not otherwise extant.