Yáng Shìxūn 楊士勛
Early-Táng Chūnqiū scholar; author of the Chūnqiū Gǔliáng zhuàn shū 春秋穀梁傳疏, the canonical zhèngyì sub-commentary on Fàn Níng 范甯’s Jí jiě and the second sub-commentary layer of KR1e0010 Chūnqiū Gǔliáng zhùshū. Biographical details are sparse.
Active in the Zhēnguān 貞觀 era (627–649) under Táng Tàizōng 唐太宗. Held the position of Sìmén 四門 Erudite (bóshì 博士) at the Imperial Academy. Kǒng Yǐngdá’s 孔穎達 preface to the Chūnqiū Zuǒzhuàn zhèngyì (KR1e0003) refers to him as “the late Sìmén Erudite Yáng Shìxūn” who served as a co-determiner of its readings, fixing his lifetime no later than the early Yǒnghuī 永徽 era (650s).
The Sìkù tíyào (under KR1e0010) observes that Yáng’s zhèngyì is less comprehensive than Kǒng’s Zuǒzhuàn zhèngyì; this is attributed to three structural disadvantages: (1) where many earlier Táng and pre-Táng scholars had treated the Zuǒzhuàn, few had treated the Gǔliáng, leaving Yáng with less material to compile; (2) the Zuǒzhuàn zhèngyì was the work of a large committee, the Gǔliáng shū of one man; (3) the Gǔliáng itself is the shortest and least ramified of the three commentaries. The tíyào further notes that the present text-state of the Gǔliáng shū has been disrupted by Sòng-period collation, especially under Xíng Bǐng 邢昺 (932–1010), so that the work as we have it is not entirely Yáng’s own.
The Gǔliáng shū is the only complete Táng zhèngyì on the Gǔliáng and the indispensable doorway to that commentary’s pre-Táng exegetical tradition. It also preserves substantial citations from Fàn Níng’s lost Lüè lì 略例.
No other work by Yáng Shìxūn survives or is firmly attested.