Sumeru is a vast and diverse nation in Teyvat, renowned for its pursuit of knowledge, learning, and wisdom. It is the center of scholarship, philosophy, and intellectual advancement, and is ruled by Nahida, the Dendro Archon. The region is deeply inspired by Middle Eastern, South Asian, and desert cultures, blending deserts, lush rainforests, and advanced academic institutions.

Sumeru is geographically diverse, divided mainly into rainforest and desert areas:
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Sumeru City: The capital and intellectual hub, home to the Sumeru Academia, libraries, scholars, and research institutions.
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Rainforest Region: Dense jungles with ancient ruins, hidden treasure, and unique flora.
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Desert Region: Arid landscapes, nomadic settlements, and sand-swept ruins of ancient civilizations.
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Kshahrewar Mountains: Rugged peaks surrounding the desert, hiding secrets and ancient relics.
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Vanarana and Other Hidden Villages: Remote settlements of scholars, mystics, and sages.
Sumeru’s landscapes are vibrant and full of puzzles, elemental challenges, and lore-rich exploration opportunities.

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Sumeru is famous for valuing wisdom above all, making it a hub for scholars, philosophers, and adventurers seeking knowledge.
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The Sumeru Academia is the largest educational institution in Teyvat, offering research in science, alchemy, elemental magic, and philosophy.
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Knowledge is seen as both a tool of power and a sacred duty, but access can be restricted, and politics sometimes influence academia.
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The society values debate, critical thinking, and discovery, though tensions exist between traditional mystics (Adepti-like scholars) and modern scientists.
