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The character 理 originally depicted 'working jade' or 'the patterns in jade.' It consists of the radical 玉 (jade) combined with 里 (village/neighborhood), suggesting the idea of revealing the natural veins and patterns within jade through careful work. Over time, its meaning expanded to encompass 'principle,' 'reason,' 'logic,' and 'order' - reflecting how the inherent patterns in jade represent the underlying order of things. The character evolved from more pictorial forms showing jade pieces to the standardized modern form. Arrived in Japan: The character 理 likely arrived in Japan during the 5th-6th centuries CE along with the broader introduction of Chinese writing systems, possibly through Buddhist texts and diplomatic exchanges. It was formally incorporated into the Japanese writing system during the Asuka and Nara periods (6th-8th centuries) as part of the mass importation of Chinese culture and scholarship.