Around the Avatamsaka Sutra there gradually arose a rich web of commentarial traditions, especially in East Asia, each seeking to unfold the sutra’s vision of a cosmos where all phenomena interpenetrate without obstruction. In China, this took shape as the Huayan school, which treated the Avatamsaka as its foundational scripture. Early figures such as Dushun and Zhiyan laid the groundwork, but it was Fazang who most systematically articulated Huayan thought, organizing the sutra’s vast imagery into a coherent doctrinal system. His works, together with those of Chengguan, offered extensive line-by-line exegesis and doctrinal syntheses, elaborating themes such as the dharmadhātu of principle and phenomena, their mutual non-obstruction, and the intricate patterns of interdependence that Huayan is known for. Zongmi later drew these insights into dialogue with Chan, exploring how the sutra’s vision of interpenetration relates to mind, practice, and enlightenment.

In Korea, the Hwaeom tradition received and reinterpreted this Chinese legacy. Wonhyo, though not confined to a single school, wrote influential works that highlighted the unifying and harmonizing power of the Avatamsaka’s teaching, using it to reconcile doctrinal disputes. Uisang, regarded as the founder of Korean Hwaeom, developed distinctive presentations of the Huayan vision, including schematic and doctrinal summaries that distilled the sutra’s portrayal of the dharmadhātu into forms suitable for contemplation and practice. These Korean contributions did not merely repeat Chinese ideas, but re-expressed the Avatamsaka worldview within a new cultural and spiritual landscape, while remaining rooted in the same core insight of radical interdependence.

In Japan, the Kegon school drew heavily on the Chinese Huayan corpus, especially the commentaries of Fazang and Chengguan, and integrated them into its own scholastic and monastic setting. Figures such as Ryōben helped establish Kegon as a major current of thought, using Huayan frameworks to interpret the Avatamsaka for Japanese practitioners and scholars. Later masters continued this line, composing expositions and doctrinal treatises that kept the Huayan reading of the sutra alive, even when not producing entirely new, independent commentaries. Across these Chinese, Korean, and Japanese traditions, the Avatamsaka Sutra thus became not only a revered text, but a living lens through which the interdependence and interpenetration of all phenomena could be contemplated, systematized, and embodied in practice.