Yì tú tōng biàn 易圖通變

Penetrating the Transformations of the Yì Diagrams

by 雷思齊 (Léi Sīqí) — “Kōng shān xiān sheng”

Léi Sīqí’s five-juàn cosmological-diagrammatic treatise on the Yì jīng, dated 1330 by preface. Companion-work to KR5d0031 Yì shì tōng biàn. Preserved as DZ 1014 / CT 1014 (Tài xuán bù 太玄部), with prefatory pieces KR5d0032 and KR5d0033.