Chéng Huí 程迴 (zì Kějiǔ 可久, of Shāsuí 沙隨), Southern-Sòng Yì scholar of the gǔyì (ancient-Yì) reconstruction movement. Author of Gǔ Zhōuyì kǎo 古周易考 in 1 juan, one of the seven principal Sòng-period gǔyì recensions enumerated in the tiyao of 呂祖謙 Lǚ Zǔqiān’s Gǔ Zhōuyì (KR1a0043). Counted by 馮椅 Féng Yǐ in his auto-preface to Hòuzhāi Yì xué (KR1a0046) among the Sòng line (邵雍 → 呂大防 / 晁說之 → 吳仁傑 → Chéng Huí + 朱熹) that progressively restored the canonical 12-piān structure.